Average day temperature:
44.4°F
Average night temperature:
38.8°F
Number of sunny days:
6 days
Day length:
8.5 - 9.5 hours
Number of rainy days:
6 days
Precipitation totals:
2.9 in.
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14 daysforecast
Seattle
weather inFebruary
Seattle
Monthly Seattle weather
January
February
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April
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July
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September
October
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December
Air temperature in January, °F
Show year:
2025
2024
2023
The highest day temperature during January of 2025 was 48°F. At the same time the lowest night temperature was 29°F. Daily and nightly erages during January were 40.8°F and 36.8°F.
Sunny, partly cloudy and cloudy daysMostly all days in January are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in January, in.Precipitation total value in Seattle in January is 2.7 in. Other months of the year show relatively similar values.
Wind speed in January, mphThe erage wind speed value in January is 5.0 mph
Average sunny hoursThis chart shows erage number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The erage number of sunny hours in January is: 2.7.
Best time for vacation in Seattle Sunniest months: July 18 days August 18 days September 14 days Warmest months: August 77.8 °F July 77.0 °F September 70.2 °F Coldest months: December 43.7 °F January 44.4 °F February 45.4 °F Rainiest months: January 6 days April 5 days March 5 days Windiest months: March 6.2 mph April 5.9 mph February 5.8 mph Seattle on a weather map