United States · 1991–2020 normal
Sun Valley in
December.
Typical December weather in Sun Valley: 7.1°C by day, -2.7°C at night, 32 mm of rain over 4.9 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high7.1°C
Typical low-2.7°C
Rain32 mm
Wet days4.9
Comfort score 11 this month (September leads the year at 82). Daylight is calculated as 9 h 23 from latitude 39.60°.
Event window
Frost-level nights in December
The measured night-time normal is -2.7°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5513307
- NOAA station
- USC00266791 · RENO WFO
- Station distance
- 3.5 km from the place centre
- Coverage
- Strong coverage · 25 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.