United States · 1991–2020 normal
Decatur in
December.
Typical December weather in Decatur: 2.9°C by day, -5.3°C at night, 70 mm of rain over 10.5 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high2.9°C
Typical low-5.3°C
Rain70 mm
Wet days10.5
Comfort score 5 this month (September leads the year at 79). Daylight is calculated as 9 h 07 from latitude 42.11°. Open-water sea temperature is 6.1°C (44 km from the place centre).
Event window
Frost-level nights in December
The measured night-time normal is -5.3°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4990524
- NOAA station
- USC00202250 · DOWAGIAC 1 W
- Station distance
- 18.8 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.