United States · 1991–2020 normal
Chelsea in
December.
Typical December weather in Chelsea: 14.5°C by day, 3°C at night, 118 mm of rain over 8.6 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high14.5°C
Typical low3°C
Rain118 mm
Wet days8.6
Comfort score 30 this month (October leads the year at 81). Daylight is calculated as 9 h 57 from latitude 33.34°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4054852
- NOAA station
- USC00013781 · HELENA
- Station distance
- 20.3 km from the place centre
- Coverage
- Good coverage · 18 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.