Average Rainfall Seattle WaOcean temperature In May, the average ocean temperature in Seattle is 46. The current year's data has a green background. Learn all about the climate of Washington State. On average, there are 152 sunny days per year in Seattle. 63" (16mm) of precipitation. A climate graph showing rainfall, temperatures and normals. 8 months, from June 21 to September 13, with an average daily high temperature above 72°F. Seattle, WA Graphical Climatology of Seattle: Daily Temperatures and Rainfall, by Year (1945 – Present) The following is a graphical climatology of Seattle, Washington (Seattle-Tacoma Int’l Airport) temperatures, precipitation, and various other parameters, from 1945 into 2022. 8 inches (248 mm) of precipitation. (Weather station: Seattle Boeing Field, USA). The US average is 28 inches of snow per year. Total precipitation in Seattle; Days Year Inches Milli­metres; 148: 2022: 40. Climate graph // Weather by Month Seattle The driest month is July, with 29 mm | 1. The coldest month of the year in Seattle is December, with an average low of 38°F and high of 47°F. 0 inches, when it rarely exceeds 3. 6 inches, and ending the month at 1. The hottest month of the year in Seattle is August, with an average high of 77°F and low of 58°F. Manhattan, NY warning 78 °F Sunny. Currently: 66 °F. Seattle, Washington gets 38 inches of rain, on average, per year. Schiller Park, IL (60176) 65 °F Mostly Cloudy. The hottest month of the year in Seattle is August, with an average high of 77°F and low of 58°F. In Seattle, Washington, during the entire year, the rain falls for 84. How much, if any, snow falls each year in Seattle? N/A. Use the options below to analyze monthly temperature and precipitation trends around the Northwest using high quality data from the United States Historical Climatology Network (USHCN) version 2. gov > Seattle/Tacoma, WA Current Hazards Current Conditions Radar Forecasts Rivers and Lakes Climate and Past Weather Local Programs Click a location below for detailed forecast. high Hi : 45: 48: 52: 58: 64: 69: Average low in ºF Av. Driving the news: Daytime temperatures in Seattle are expected to be 20 degrees to 25 degrees above normal on Saturday, Sunday and Monday when highs are expected to reach into the mid-80s or even the 90s in areas away from the water, DeFlitch told Axios. The numbers here describe what the weather in Seattle, Washington was like for every year since 2010. 0 inches in Seattle means that it is about average compared to other places in Washington. 58°F, the average monthly water temperature reaches its highest value in the year in August. low Lo : 36: 37: 39: 43: 47: 52: Days with precipitation Days precip. Notice that most of the cities with more rainfall are located east of the Mississippi River, as shown in the map below made by climatologist Brian Brettschneider. The coldest month of the year in Seattle is December, with an average low of 38°F and high of 47°F. Bellingham, Washington gets 39. Houston, TX 78 °F Mostly Cloudy. The best month to swim in the sea is in July when the average sea temperature is. 34 inches of precipitation a year, with the vast majority falling as rain instead of snow. 5 mm) on October 20, 2003, and the most snowfall was 21. 7 inches (43mm) is not unusual mainly in December and February. Highs across the region will continue to climb upward through the 70s as pressure builds and are eventually expected to tip past 80 degrees — nearly 20 degrees above average for this time of year. Seattle, Washington Climate - 98101 Weather, Average Rainfall, and Temperatures. cities east of the Rocky Mountains. Office of the Washington State Climatologist. Figure 1. high Hi : 45: 48: 52: 58: 64: 69: Average low in ºF Av. Official precipitation totals for the city are measured at Sea-Tac Airport, which is actually located south of the Seattle city limits. Average annual rainfall at Sea-Tac is 39. Seattle is November where a typical day has a 51% chance of precipitation and gets 0. The tables below give yearly averages for rainfall plus snowfall at cities and other locations in Washington state. [17] In an average year, at least 0. It has more days with rain than both New York City and Miami. Lighter but still impressive totals are possible for North Sound, the Southwest. Portions of the Olympic Peninsula receive upwards of 150 inches of precipitation annually, while areas along the Columbia River in eastern interior Washington average less than 10 inches. Most rain in Seattle is seen in winter and on an annual base the city experiences a large amount of rainfall making it one of the wettest cities in the country. Portions of the Olympic Peninsula receive upwards of 150 inches of precipitation annually, while areas along the Columbia River in eastern interior Washington average less than 10 inches. In more common terms of how much that is, some would describe it as light rain. As mentioned, even though the sky is often cloudy for many months a year, in summer (and even in late spring) the sunshine amount becomes good. The month with the least rain in Seattle is July, with an average rainfall of 0. DP : 18: 14: 16: 14: 12: 9: Hours of sunshine Hours sun. And on the average day it rains or snows, we get 0. There was a reason Forks was chosen as the setting of the. 2022 Rainfall Despite notching its driest summer on record, Seattle still received above-average rainfall in 2022, thanks in part to a very soggy spring. DP : 19: 15: 16: 13: 11: 9: Hours of sunshine Hours sun. The 30 year averages are shown just below the current year's rainfall, tan background. They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. Average annual rainfall at Sea-Tac is 39. A climate chart for your city, indicating the monthly high temperatures and rainfall. 1 inches, when it rarely exceeds 2. The average sliding 31-day rainfall during June in Seattle is decreasing, starting the month at 2. See more current weather Annual Weather Averages Near Seattle Averages are for Seattle Boeing Field, which is 7 miles from Seattle. 7" (43mm), mostly in December and February. Winters in Seattle have an average maximum temperature of around 8 to 11 degrees Celsius (46-52° Fahrenheit), so snowfall is rare. There is also information on the number of days with wet weather. A lot of rain (rainy season) falls in the months: January, February, March, April, May, October, November and December. Average High Temperatures and Rainfall by Month: June: 69 F/1. The annual rainfall of 38. 12, 2023 at 11:26:41 am PDT Watches, Warnings & Advisories Zoom Out Heat Advisory. 1 days and regularly aggregates up to 0. The official normals are calculated for a uniform 30 year period, and consist of annual/seasonal, monthly, daily, and hourly averages and statistics of temperature, precipitation, and other climatological variables from almost 15,000 U. precipitation in inch Av. Whereas in January the lowest value is measured with about 7. In Seattle in. Here is the average rainfall. 2 inches (31 mm) of precipitation. 7 inches of precipitation annually, Seattle ranks 32nd among the nation's 50 largest cities. 1 day ago · Highs across the region will continue to climb upward through the 70s as pressure builds and are eventually expected to tip past 80 degrees — nearly 20 degrees above average for this time of year. low Lo : 37: 37: 39: 42: 47: 52: Days with precipitation Days precip. Half the time, Seattle receives 1. Most of the precipitation here falls in November, averaging 206 mm | 8. 8 mm) of precipitation. San Francisco, CA 70 °F Sunny. The US average is 38 inches of rain per year. Official precipitation totals for the city are measured at Sea-Tac Airport, which is actually located south of the Seattle city limits. Complete climate information for Seattle, Washington. One in four years has drier weather, while another one in four is wetter. Seattle - Recent Annual Temperatures, Rain & Snow. Here are the average sunshine hours per day. The US average is 205 sunny days. Office of the Washington State Climatologist. The average sliding 31-day rainfall during June in Seattle is decreasing, starting the month at 2. 2 inches (31 mm) of precipitation. Seattle experiences chilly, rainy winters. Seattle, Washington gets 38 inches of rain, on average, per year. November is the month when it rains the most, with an average 18. The season's average humidity is 79%, and there are typically two hours of sunshine per day. Sun : 69: 108: 178: 207: 253: 268: Av. low Lo : 37: 37: 39: 42: 47: 52: Days with precipitation Days precip. June averages 1. Get the monthly weather forecast for Seattle, WA, including daily high/low, historical averages, to help you plan ahead. the seattle-tacoma wa airport climate normals for today normal record year maximum temperature (f) 64 87 2013 minimum temperature (f) 47 36 1965 2002 sunrise and sunset may 6 2023sunrise 545 am pdt sunset 828 pm pdt may 7 2023sunrise 543 am pdt sunset 829 pm pdt - indicates negative numbers. The numbers here describe what the weather in Seattle, Washington was like for every year since 2010. 25 mm) of precipitation falls on 150 days, more than nearly all U. SEATTLE — Western Washington saw a variety of weather in 2022, breaking records throughout the year. 5 inches (1739 mm) Weather Forecasts for Seattle (Washington State) Show in Celsius Fri May 05 54°F | 46°F S 9 mph 1. Each place has a total for the amount of precipitation it usually receives in a year. 6 months, from November 12 to March 1, with an average daily high temperature below 53°F. high Hi : 76: 76: 71: 60: 51: 46: Average low in ºF Av. Get the monthly weather forecast for Seattle, WA, including daily high/low, historical averages, to help you plan ahead. With many more "rain days" than other major American cities, Seattle has a well-earned reputation for frequent rain. Highs across the region will continue to climb upward through the 70s as pressure builds and are eventually expected to tip past 80 degrees — nearly 20 degrees above average for this time of year. 5 inches (1739 mm) Weather Forecasts for Seattle (Washington State) Show in Celsius Fri May 05 54°F | 46°F S 9 mph 1. Rainfall is experienced for an average of eighteen days per month, and the rain gauge collects approximately 5. On average, there are 200 sunny days per year in Boston. average temperature Seattle The warmest. Showing: Weather by CustomWeather, © 2023 Need some help?. Sun The sun's rays reach the ground in Seattle during 52 percent of daylight hours on average in May, for a total of 244 hours in the month. Average weather Seattle, WA - 98101. Seattle - Recent Annual Temperatures, Rain & Snow. Sun : 312: 281: 221: 142: 72: 52: Av. Archives The Mother of All Convergence Zones. Humidity averages 79% across the season, and the average sunshine hours per day are two. 01 inches of rain, or. Statewide total annual precipitation has ranged from a low of 26. The highest average 31-day accumulation is 7. Use the options below to analyze monthly temperature and precipitation trends around the Northwest using high quality data from the United States Historical Climatology Network (USHCN) version 2. 1 day ago · In Seattle, there’s a 40% to 50% chance that highs will reach into the 90s on Mother’s Day, and an 85% chance of 90-degree temperatures in the southwest interior, according to the weather service. The normal high temperature for this time of year is 65 degrees, he said. About 2,100 hours of sunshine per year are recorded in Seattle. 7 inches of precipitation annually, Seattle ranks 32nd among the nation's 50 largest cities. According to official data, the driest months of the year in Seattle are July and August, while just two months later, the number of rainy days increases several times. Color Maps of Climate Data (usually whole US) Line Graphs of Long-term Averages & Recent data. Graphical Climatology of Seattle: Daily Temperatures and Rainfall, by Year (1945 – Present) The following is a graphical climatology of Seattle, Washington (Seattle-Tacoma Int’l Airport) temperatures, precipitation, and various other parameters, from 1945 into 2023. 8 inches (147mm) of rain on the average of 18 days per month when it rains. Based on weather reports collected during 1985–2015. The US average is 205 sunny days. Rainfall Scorecard This table compares rainfall amounts from previous years with the current year. 34 inches of precipitation a year, with the vast majority falling as rain instead of snow. In Seattle, there's a 40% to 50% chance that highs will reach into the 90s on Mother's Day, and an 85% chance of 90-degree temperatures in the southwest interior, according to the weather service. 2022 Rainfall Despite notching its driest summer on record, Seattle still received above-average rainfall in 2022, thanks in part to a very soggy spring. The US average is 38. NW Temperature, Precipitation, and SWE Trend Analysis Mountain Snow Depth Plotting WA Cloud Cover. Puget Sound Spring Outlook: Slightly Cooler With Average Rain - Seattle, WA - Washington is one of the few places in the United States that could see cooler-than-normal temperatures this spring. 7 inches of precipitation annually, Seattle ranks 32nd among the nation's 50 largest cities. Seattle experiences chilly, rainy winters. Color Maps of Climate Data (usually whole US) Line Graphs of Long-term Averages & Recent data. 8 inches (147mm) of rain on the average of 18 days per month when it rains. Learn all about the climate of Washington State. In Seattle, the average relative humidity in November is 84%. precipitation in Jan: January, Feb: February,. Seattle averages 39. About 2,100 hours of sunshine per year are recorded in Seattle. The US average is 38 inches of rain per year. POPULAR POSTS Is the Hottest Weather of the Year Behind Us?. 7 inches (43mm) is not unusual. 0 inches in 1929 to a high of 55. Seattle averages 152 sunny days per year. In July 2022, Seattle broke another weather record when high temperatures hit 90 degrees or above for six days in a row. gov > Seattle/Tacoma, WA Current Hazards Current Conditions Radar Forecasts Rivers and Lakes Climate and Past Weather Local Programs Click a location below for detailed forecast. Seattle, Washington Summer High: the July high is around 75. Presented are daily climatological overview charts (temperature), annual time-series (temperature and precipitation. Olympia, Washington gets 52. 6062 Average weather Seattle, WA - 98101 Monthly: 1981-2010 normals Abbreviations Average precipitation in : Av. They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question. : 58 inches average annual rainfall; 50 average annual rainy days Seattle gets its reputation as being the rainiest city due to the number of days with precipitation. The annual rainfall of 38. Seattle, WA Graphical Climatology of Seattle: Daily Temperatures and Rainfall, by Year (1945 – Present) The following is a graphical climatology of Seattle, Washington (Seattle-Tacoma Int’l Airport) temperatures, precipitation, and various other parameters, from 1945 into 2022. 64°F water temperatures is reached in Seattle (Salish Sea) over the year. How Many Inches of Rain per year does Seattle get ? 37. The wettest season is Summer with 26% of yearly precipitation and 24% occurs in Spring, which is the driest season. Seattle averages 5 inches of snow per year. Seattle weather averages and climate Seattle, Washington. The average amount of annual precipitation is: 68. 2022 Rainfall Despite notching its driest summer on record, Seattle still received above-average rainfall in 2022, thanks in part to a very soggy spring. 34 inches of precipitation a year, with the vast majority falling as rain instead of snow. The average sliding 31-day rainfall during November in Seattle is rapidly increasing, starting the month at 6. 8 inches (29 to 70 mm) of rainfall in May. average temperature Seattle The warmest month of the year is August, with an average temperature of 19. Snowfall In Seattle, Washington, snow does not fall in April through October and December. On average, there are 152 sunny days per year in Seattle. Seattle typically receives some snowfall on an annual basis but heavy snow is. Driving the news: Daytime temperatures in Seattle are expected to be 20 degrees to 25 degrees above normal on Saturday, Sunday and Monday when highs are expected to reach into the mid-80s or even the 90s in areas away from the water, DeFlitch told Axios. 8 inches of rain, on average, per year. Rainfall is experienced for an average of eighteen days per month, and the rain gauge collects approximately 5. Driving the news: Daytime temperatures in Seattle are expected to be 20 degrees to 25 degrees above normal on Saturday, Sunday and Monday when highs are expected to reach into the mid-80s or even the 90s in areas away from the water, DeFlitch told Axios. Notice that most of the cities with more rainfall are located east of the Mississippi River, as shown in the map below made by climatologist Brian Brettschneider. Climate Seattle - Washington Jan Ja Feb Fe Mar Ma Apr Ap May Ma Jun Ju; Average high in ºF Av. (Weather station: Seattle Boeing Field, USA). Rain falls throughout the year in Seattle. Station Data. This means that Seattle has more frequent rain, but the light rain results in low totals. 6 inches of rain, and the driest month is February with 3. According to official data, the driest months of the year in Seattle are July and August, while just two months later, the number of rainy days increases several times. Official precipitation totals for the city are measured at Sea-Tac Airport, which is actually located south of the. Seattle, Washington gets 38 inches of rain, on average, per year. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 500°F 500°F 1,000°F 1,000°F 1,500°F 1,500°F 2,000°F 2,000°F 2,500°F 2,500°F Now Now Dublin Dublin Seattle Seattle The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature ( 50°F in. gov > Seattle/Tacoma, WA Current Hazards Current Conditions Radar Forecasts Rivers and Lakes Climate and Past Weather Local Programs Click a location below for detailed forecast. Most rain in Seattle is seen in winter and on an annual base the city experiences a large amount of rainfall making it one of the wettest cities in the country. Average precipitation in : Av. 4 inches, when it rarely exceeds 10. The rain gauge gathers about 5. 45 inches of rain for the month of June in Seattle. The tables below give yearly averages for rainfall plus snowfall at cities and other locations in Washington state. See more current weather Annual Weather Averages Near Seattle Averages are for Seattle Boeing Field, which is 7 miles from Seattle. The US average is 205 sunny days. The US average is 205 sunny days. Weekend rainfall forecast. DP : 5: 4: 7: 13: 18: 17: Hours of sunshine Hours sun. For example, it has temperate rainforest on the west (coast) side. Average Monthly Rainfall in June in Seattle Summer Link Download Compare. The season’s average humidity is 79%, and there are typically two hours of sunshine per day. The average amount of annual precipitation is: 68. Here is the average rainfall. 64°F water temperatures is reached in Seattle (Salish Sea) over the year. On average, Seattle only gets 37 inches of rain over 165 days while 40 miles south in Olympia, there is more than 50 inches of rain received in the same span! The Washington State Peninsula has a lot of variation. high Hi : 45: 48: 52: 58: 64: 69: Average low in ºF Av. Seattle averages 39. On average, July is the driest month with 1. Annual Weather Averages. Seattle, Washington gets 38 inches of rain, on average, per year. 34 inches and 2022 brought in 40. Snow is not uncommon, accumulating up to 1. A series of tables gives data by year for temperature, precipitation and snowfall. Seattle averages 4. Monthly averages Seattle Longitude: -122. TEMPERATURE (F) YESTERDAY MAXIMUM 51 236 PM 86 1953 64 -13 52 MINIMUM 48 1159 PM 33 1947 47 1 44 AVERAGE 50 55 -5 48 PRECIPITATION (IN) YESTERDAY 0. 2" (132mm) of precipitation. 4 inches, when it rarely exceeds 11. The hottest year on record was 2015, with a statewide average temperature of 50. Seattle averages 5 inches of snow per year. How Much Sunshine each year is there in Seattle (in hours)? 2163 hours. 7°F above the long-term average. Based on weather reports collected during 1985-2015. On average, January is the wettest month with 9. Notice that most of the cities with more rainfall are located east of the Mississippi River, as shown in the map. The US average is 38 inches of rain per year. Official precipitation totals for the city are measured at Sea-Tac Airport, which is actually located south of the Seattle city limits. Rainfall is experienced for an average of eighteen days per month, and the rain gauge collects approximately 5. NW Temperature, Precipitation, and SWE Trend Analysis Mountain Snow Depth Plotting WA Cloud Cover. Average Monthly Snowfall Link Download Dublin Seattle Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0. 6062 Average weather Seattle, WA - 98101. On average, January is the wettest month with 9. 8 inches (248 mm) of precipitation. Bellingham averages 9 inches of snow per year. TEMPERATURE (F) YESTERDAY MAXIMUM 51 236 PM 86 1953 64 -13 52 MINIMUM 48 1159 PM 33 1947 47 1 44 AVERAGE 50 55 -5 48 PRECIPITATION (IN) YESTERDAY 0. Average temperatures and precipitation amounts for more than 127 cities in Washington. July is the hottest month in Seattle with an average temperature of 18°C (64°F) and the coldest is January at 5°C (41°F) with the most daily sunshine hours at 10 in July. Seattle experiences an average of 152 rainy days a year, which is more than most cities across the U. Some years bring plenty of warm, sunny days, other years the fall is filled with cool, rainy days. A lot of rain (rainy season) falls in the months: January, February, March, April, May, October, November and December. low Lo : 56: 56: 52: 46: 40: 36: Days with precipitation Days precip. precipitation in inch Av. The official normals are calculated for a uniform 30 year period, and consist of annual/seasonal, monthly, daily, and hourly averages and statistics of temperature, precipitation, and other climatological variables from almost 15,000 U. gov > Seattle/Tacoma, WA Current Hazards Current Conditions Radar Forecasts Rivers and Lakes Climate and Past Weather Local Programs Click a location below for detailed forecast. 8 Now Now Dublin Dublin Seattle Seattle. The month with the most rain in Seattle is November, with an average rainfall of 7. Find out how often it rains, snows, and the gets cold or hot in Seattle. precipitation in inch Av. The warm season lasts for 2. Driving the news: Daytime temperatures in Seattle are expected to be 20 degrees to 25 degrees above normal on. 8 inches (147mm) of rain on the average of 18 days per month when it rains. SEATTLE — Western Washington saw a variety of weather in 2022, breaking records throughout the year. Seattle experiences an average of 152 rainy days a year, which is more than most cities across the U. 8 degrees Winter Low: the January low is 37 Rain: averages 38 inches of rain a. Winters in Seattle have an average maximum temperature of around 8 to 11 degrees Celsius (46-52° Fahrenheit), so snowfall is rare. Overall, rain totals ended about normal. The US average is 28 inches of snow per year. 5 in (55 cm) on February 2, 1916. 6 months, from November 12 to March 1, with an average daily high temperature below 53°F. The most rainfall in 24 hours was 5. Graphical Climatology of Seattle: Daily Temperatures and Rainfall, by Year (1945 – Present) The following is a graphical climatology of Seattle, Washington (Seattle-Tacoma Int’l Airport) temperatures, precipitation, and various other parameters, from 1945 into 2023. Monthly temperature, precipitation and hours of sunshine. 1 inches of rain per year. Average high in ºF Av. A series of tables gives data by year for temperature, precipitation and snowfall. How Many Rainy Days a year are there in Seattle? 147 days. Each place has a total for the amount of precipitation it usually receives in a year. Seattle, Washington gets 38 inches of rain, on average, per year. Here are the average sunshine hours per day. rain totals ended about normal. Rainfall In Seattle, during November, the rain falls for 9. Archives The Mother of All Convergence Zones POPULAR POSTS Biggest February snowstorm in a generation wallops Seattle Seattle Sees Wettest Day in 3 Months; More Rain to Come. Get the monthly weather forecast for Seattle, WA, including daily high/low, historical averages, to help you plan ahead. An average of 9. Since the beginning of the 20th century, temperatures in Washington have risen almost 2°F (Figure 1), and since 1986, all but 5 years have been above the long-term (1895–2020) average. The wettest month is December with an average of 150mm of rain. 1 inch of rainfall. precipitation in inch Av. 7 inches, and ending the month at 7. low Lo : 36: 37: 39: 43: 47: 52: Days with precipitation Days precip. The US average is 28 inches of snow per year. Sun : 74: 99: 154: 201: 247: 234: Av. A rainy day is defined as a calendar day in which at least 0. Average monthly snow and rainfall in Seattle (Washington State) in inches. 34 inches of precipitation a year, with the vast majority falling as rain instead of snow. NW Temperature, Precipitation, and SWE Trend Analysis Mountain Snow Depth Plotting WA Cloud Cover. On average, there are 152 sunny days per year in Seattle. Humidity averages 79% across the season, and the average sunshine hours per day are two. Climate graph // Weather by Month Seattle The driest month is July, with 29 mm | 1. Weather. high Hi : 47: 50: 54: 58: 65: 70: Average low in ºF Av. 6062 Average weather Seattle, WA - 98164. rain totals ended about normal. 1 inches of rain per year. In Seattle, during the entire year, the rain falls for 84. Watch: KING 5's top stories on YouTube CID in. May Newsletter May 10, 2023; April Newsletter April 10, 2023; March Newsletter March 10, 2023. Average Monthly Rainfall in Seattle Link Download Compare History: 2023 2022 2021 2020 2019 2018 2017 2016 2015. 7 inches of rain, on average, per year. Monthly averages Seattle Longitude: -122. 75 inches Fall in Seattle Fall in Seattle can vary quite a bit, just like spring. On average, January is the wettest month with 9. Most of the precipitation here falls in November, averaging 206 mm | 8. Color Maps of Climate Data (usually whole US) Line Graphs of Long-term Averages & Recent data. Here is the average rainfall. The season’s average humidity is 79%, and there are typically two hours of sunshine per day. 7 inches of precipitation annually, Seattle ranks 32nd among the nation's 50 largest cities. Hotter summers here mirror trends seen globally over the past eight years, the warmest ever recorded. Olympia averages 6 inches of snow per year. The rain gauge gathers about 5. June, there's a 28% chance of rain on an average day. 2023 Rainfall - Seattle Weather Blog Temperature Stats Home Rain Stats 2023 Rainfall 2023 Rainfall It's been a relatively dry—by Seattle standards—start to the year, with the city experiencing below-average rainfall for the first three months. 4 inches of rain, on average, per year. March is the wettest month in Boston with 4. 1 inches of rain, on average, per year.