Places › Seattle, WA › December

Seattle in December

An off month — score 41 of 100

Typical December days in Seattle reach about 46°F with nights near 37°F; rain is frequent — about 20 days see some rain, usually in showers; days are short — about 8h 27m of daylight at mid-month.

What to pack for Seattle in December

• An insulated coat, plus a hat and gloves for mornings.
• A waterproof shell and shoes you can soak — rain falls on about 20 days in a typical December, so plan an indoor anchor each day.
• Warm, waterproof boots for slush and snow days.
• An early-start plan — mid-December daylight is only about 8h 27m.

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December vs. the alternatives

The whole year in Seattle

Averages are the 1991–2020 climate normals (NOAA National Centers for Environmental Information) for the station named on each page. Rain days = days with at least 0.01 in of precipitation. Daylight is computed for the middle of the month.