United States · 1991–2020 normal
Chatham in
December.
Typical December weather in Chatham: 6.6°C by day, 0°C at night, 121 mm of rain over 10.4 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high6.6°C
Typical low0°C
Rain121 mm
Wet days10.4
Comfort score 5 this month (July leads the year at 87). Daylight is calculated as 9 h 10 from latitude 41.68°. Open-water sea temperature is 7.6°C (10 km from the place centre).
Event window
Frost-level nights in December
The measured night-time normal is 0°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4932844
- NOAA station
- USC00191386 · CHATHAM
- Station distance
- 2.8 km from the place centre
- Coverage
- Strong coverage · 29 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.