United States · 1991–2020 normal
Grass Valley in
December.
Typical December weather in Grass Valley: 11.5°C by day, 0.4°C at night, 266 mm of rain over 11.1 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high11.5°C
Typical low0.4°C
Rain266 mm
Wet days11.1
Comfort score 5 this month (June leads the year at 84). Daylight is calculated as 9 h 25 from latitude 39.22°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5353775
- NOAA station
- USC00043573 · GRASS VALLEY #2
- Station distance
- 1.8 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.