What is the weather like in Alta vs Sun Valley in December?

In December, Alta averages -2°C high / -9°C low with about 102 mm of rain; Sun Valley averages 0°C high / -12°C low with about 63 mm.

Alta vs Sun Valley in December

Alta and Sun Valley are nearly tied in December — 91 vs 88 on SeasonMap's comfort score. Alta is freezing, rainy, clean air; Sun Valley is freezing, a little rain, clean air.

Alta vs Sun Valley — December climate, side by side

	🇺🇸 Alta	🇺🇸 Sun Valley
Comfort score	91/100 (S)	88/100 (A)
Feels-like high	-2°C	-3°C
Avg high / low	-2° / -9°	0° / -12°
Rainfall	102 mm	63 mm
Rainy days	13	9
Humidity	70%	78%
Air quality (AQI)	46	40

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

Month by month

Alta vs Sun Valley in December — FAQ

Is December better in Alta or Sun Valley?: Alta and Sun Valley are nearly tied in December — 91 vs 88 on SeasonMap's comfort score. Alta is freezing, rainy, clean air; Sun Valley is freezing, a little rain, clean air.
What is the weather like in Alta vs Sun Valley in December?: In December, Alta averages -2°C high / -9°C low with about 102 mm of rain; Sun Valley averages 0°C high / -12°C low with about 63 mm.