United States · 1991–2020 normal
Derwood in
December.
Typical December weather in Derwood: 7.6°C by day, -1.2°C at night, 76 mm of rain over 7.7 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high7.6°C
Typical low-1.2°C
Rain76 mm
Wet days7.7
Comfort score 7 this month (September leads the year at 83). Daylight is calculated as 9 h 26 from latitude 39.12°.
Event window
Frost-level nights in December
The measured night-time normal is -1.2°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4353084
- NOAA station
- USC00187705 · ROCKVILLE 1 NE
- Station distance
- 2.1 km from the place centre
- Coverage
- Good coverage · 16 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.