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December weather in Washington, United States

Averages from 155 days in December across 2020–2024.

Typical conditions

Average high9.2°C
Average low0.7°C
Average mean4.6°C
Total precipitation581.2 mm
Rainy days68
Average precipitation hours2.9 h
Average max wind speed17.1 km/h
Average sunshine6.2 h/day

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