United States · 1991–2020 normal
Rockford in
December.
Typical December weather in Rockford: 5.1°C by day, -4.5°C at night, 81 mm of rain over 9.8 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high5.1°C
Typical low-4.5°C
Rain81 mm
Wet days9.8
Comfort score 5 this month (September leads the year at 77). Daylight is calculated as 9 h 18 from latitude 40.48°.
Event window
Frost-level nights in December
The measured night-time normal is -4.5°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5168451
- NOAA station
- USC00332160 · DENNISON WTR WKS
- Station distance
- 8.5 km from the place centre
- Coverage
- Good coverage · 23 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.