December

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December

Seattle in December average weather

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Temperatures trend during December in Seattle

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December weather day by day

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November January

Date	Weather	Temperatures	Rain	Snow
Dec. 1	Moderate or heavy rain with thunder	9° /3°	6.1 mm	0 cm
Dec. 2	Moderate rain	9° /6°	12 mm	0 cm
Dec. 3	Moderate rain	13° /5°	6.7 mm	0 cm
Dec. 4	Moderate rain	13° /5°	18.6 mm	0 cm
Dec. 5	Moderate rain	13° /8°	49.7 mm	0 cm
Dec. 6	Moderate rain	9° /6°	22.7 mm	0 cm
Dec. 7	Light rain shower	7° /4°	15.8 mm	0 cm
Dec. 8	Patchy rain possible	7° /2°	0.2 mm	0 cm
Dec. 9	Moderate rain	5° /0°	19.9 mm	0 cm
Dec. 10	Moderate or heavy rain with thunder	8° /3°	8.3 mm	0 cm
Dec. 11	Fog	8° /6°	0.3 mm	0 cm
Dec. 12	Partly cloudy	8° /2°	0 mm	0 cm
Dec. 13	Cloudy	8° /1°	0.2 mm	0 cm
Dec. 14	Light rain	7° /4°	3.5 mm	0 cm
Dec. 15	Overcast	10° /4°	0 mm	0 cm
Dec. 16	Overcast	9° /2°	0 mm	0 cm
Dec. 17	Sunny	9° /2°	0 mm	0 cm
Dec. 18	Overcast	9° /3°	0 mm	0 cm
Dec. 19	Light rain	7° /6°	9.2 mm	0 cm
Dec. 20	Sunny	11° /4°	0 mm	0 cm
Dec. 21	Overcast	10° /4°	0 mm	0 cm
Dec. 22	Overcast	1° /-3°	3.2 mm	0 cm
Dec. 23	Moderate or heavy rain shower	5° /-4°	9.4 mm	5.1 cm
Dec. 24	Moderate or heavy rain shower	5° /1°	13.2 mm	0 cm
Dec. 25	Patchy rain possible	6° /2°	14.6 mm	0 cm
Dec. 26	Moderate or heavy rain shower	11° /5°	21.4 mm	0 cm
Dec. 27	Heavy rain at times	8° /5°	10.8 mm	0 cm
Dec. 28	Patchy rain possible	8° /3°	1.8 mm	0 cm
Dec. 29	Patchy rain possible	7° /3°	2.1 mm	0 cm
Dec. 30	Moderate rain at times	9° /4°	8.5 mm	0 cm
Dec. 31	Moderate rain at times	9° /3°	2.7 mm	0 cm
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Important Notice

Our weather forecast for Seattle in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Seattle forecast closer to your planned date for the most up-to-date weather information.

Seattle in December - FAQ

What are the expected maximum and minimum temperatures in Seattle during December?

Prepare for cooler days with highs just around 9° and colder nights, dipping below 3°.

How much rainfall should be expected in Seattle during December?

Significant rainfall exceeding 348.5 mm is expected in Seattle during December, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.

Is snowfall common in Seattle during December?

Seattle experiences an average snowfall of 10.3 cm during December, occurring over 0 days, which may interest winter sports enthusiasts.

What are the typical wind conditions in Seattle during December?

The average wind speed in Seattle during December is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

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Mon.	Tue.	Wed.	Thu.	Fri.	Sat.	Sun.
						1 9°
2 9°	3 13°	4 13°	5 13°	6 9°	7 7°	8 7°
9 5°	10 8°	11 8°	12 8°	13 8°	14 7°	15 10°
16 9°	17 9°	18 9°	19 7°	20 11°	21 10°	22 1°
23 5°	24 5°	25 6°	26 11°	27 8°	28 8°	29 7°
30 9°	31 9°