What is the weather like in Big Sky vs Sun Valley in December?

In December, Big Sky averages -1°C high / -10°C low with about 49 mm of rain; Sun Valley averages 0°C high / -12°C low with about 63 mm.

Big Sky vs Sun Valley in December

Big Sky and Sun Valley are nearly tied in December — 87 vs 88 on SeasonMap's comfort score. Big Sky is freezing, a little rain, clean air; Sun Valley is freezing, a little rain, clean air.

Big Sky vs Sun Valley — December climate, side by side

	Big Sky	Sun Valley
Comfort score	87/100 (A)	88/100 (A)
Feels-like high	-6°C	-3°C
Avg high / low	-1° / -10°	0° / -12°
Rainfall	49 mm	63 mm
Rainy days	12	9
Humidity	79%	78%
Air quality (AQI)	41	40

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

Big Sky vs Sun Valley in December — FAQ

Is December better in Big Sky or Sun Valley?: Big Sky and Sun Valley are nearly tied in December — 87 vs 88 on SeasonMap's comfort score. Big Sky is freezing, a little rain, clean air; Sun Valley is freezing, a little rain, clean air.
What is the weather like in Big Sky vs Sun Valley in December?: In December, Big Sky averages -1°C high / -10°C low with about 49 mm of rain; Sun Valley averages 0°C high / -12°C low with about 63 mm.