What is the weather like in Mount Rainier National Park vs Seattle in December?

In December, Mount Rainier National Park averages -6°C high / -12°C low with about 281 mm of rain; Seattle averages 8°C high / 2°C low with about 103 mm.

Mount Rainier National Park vs Seattle in December

Seattle is the better pick in December — 49 vs 27 on SeasonMap's comfort score. Seattle is cold, rainy, clean air, while Mount Rainier National Park is freezing, soaked, clean air.

Mount Rainier National Park vs Seattle — December climate, side by side

	🇺🇸 Mount Rainier National Park	🇺🇸 Seattle
Comfort score	27/100 (F)	49/100 (F)
Feels-like high	-10°C	5°C
Avg high / low	-6° / -12°	8° / 2°
Rainfall	281 mm	103 mm
Rainy days	20	14
Humidity	85%	87%
Air quality (AQI)	36	38

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Mount Rainier National Park vs Seattle in December — FAQ

Is December better in Mount Rainier National Park or Seattle?: Seattle is the better pick in December — 49 vs 27 on SeasonMap's comfort score. Seattle is cold, rainy, clean air, while Mount Rainier National Park is freezing, soaked, clean air.
What is the weather like in Mount Rainier National Park vs Seattle in December?: In December, Mount Rainier National Park averages -6°C high / -12°C low with about 281 mm of rain; Seattle averages 8°C high / 2°C low with about 103 mm.