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Get the monthly weather forecast for Seattle, WA, including daily high/low, historical averages, to help you plan ahead.
March Weather in Seattle. Washington, United States. Daily high temperatures increase by 5°F, from 53°F to 57°F, rarely falling below 46°F or exceeding 66°F. Daily low temperatures increase by 3°F, from 40°F to 43°F, rarely falling below 33°F or exceeding 49°F. For reference, on July 31, the hottest day of the year, temperatures in ...
In March, Seattle generally has low temperatures and high rainfall. Throughout the daytime, temperatures often hover around 12°C . However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 4°C .
- Temperature
- Precipitation
- Sun
- Humidity
Usually every day in March the temperature rises to over 40 degrees Fahrenheit (4 degrees Celsius) in Seattle. The city averages 5 days this month when the thermometer reaches into the 60s °F (over 16 °C). Temperatures above 70 °F (21 °C) are unusual during March. The thermometer dips to freezing on an average of 2 nights. But March does not normal...
Half the time, Seattle receives 2.8 to 4.8 inches (70 to 121 mm) of rainfall in March. One in four years has drier weather, while another one in four is wetter. Although rare, some of the precipitation this month can fall as snow.
The sun's rays reach the ground in Seattle during 42 percent of daylight hours on average in March, for a total of 156 hours in the month. Typically on 4 days this month the sky is mainly clear, with at most 30 percent cloud cover. Sunlight in March at Seattle lasts for 11 hours and 57 minutes a day on average. The shortest day of the month is the ...
The relative humidity in Seattle during March usually peaks at 83 percent in the morning then drops to 61 percent by late afternoon.
Upon the onset of March, Seattle witnesses an average high-temperature of a cool 50.5°F (10.3°C), showing a close resemblance to the prior month. The temperature in Seattle dips to an average of 37.4°F (3°C) during March nights. Humidity The average relative humidity in March in Seattle is 82%. Rainfall
- What are the temperatures in Seattle in March?The average high-temperature and low-temperature during March are 50.5°F and 37.4°F respectively.
- What is the average humidity in March in Seattle?The average relative humidity in March in Seattle, Washington, is 82% .
- How many days does it rain in March in Seattle?In Seattle, in March, during 8.9 rainfall days , 0.35" of precipitation is typically accumulated.
- What is the last month it snows in Seattle?March is the last month it regularly snows in Seattle. During 0.5 snowfall days , in March, Seattle aggregates 0.08" of snow .
- What is the ocean temperature in March in Seattle?In Seattle, the average seawater temperature in March is 45.9°F . Swimming in 45.9°F is considered dangerous. Unprotected immersion in temperatu...
- How many hours of daylight does Seattle have in March?In Seattle, Washington, the average day length in March is 11h and 57min .
- When is the sunrise / sunset in March in Seattle?In March, on the first day of the month, sunrise is at 6:49 am and sunset at 5:53 pm PST. On the last day of the month, sunrise is at 6:...
- When does Daylight Saving Time (DST) start in March in Seattle?On Sunday, March 12. 2023 , at 2:00 am, Daylight Saving Time starts , and the time zone changes from PST to PDT. DST ends Sunday, November 5. 202...
- How many hours of sunshine does Seattle have in March?In March, the average sunshine duration in Seattle is 6.3h .
The weather in Seattle in March is cold with a gentle breeze, with average highs of 51°F (11°C) and lows of 37°F (3°C).
March 2022 Weather History in Seattle Washington, United States. The data for this report comes from the Seattle-Tacoma International Airport. See all nearby weather stations. This report shows the past weather for Seattle, providing a weather history for March 2022.
