Is Seattle hot in March?
Days are typically cool at 12.2°C, while nights average 4.3°C.
United States · 1991–2020 normal
Typical March weather in Seattle: 12.2°C by day, 4.3°C at night, 101 mm of rain over 14.1 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, March scores 23 out of 100 (July leads the year at 96). Daylight is calculated as 11 h 44 from latitude 47.61°.
March at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically cool at 12.2°C, while nights average 4.3°C.
The measured monthly average is 101 mm across about 14 wet days.
There are about 11 h 44 between sunrise and sunset at mid-month, calculated from the place latitude.
March ranks 8 of 12 in our weather comparison; July ranks first.
The evidence behind this page
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The weather comparison for Seattle is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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