United States · 1991–2020 normal
Waterloo in
December.
Typical December weather in Waterloo: 2.4°C by day, -7.5°C at night, 34 mm of rain over 4 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high2.4°C
Typical low-7.5°C
Rain34 mm
Wet days4
Comfort score 5 this month (September leads the year at 82). Daylight is calculated as 9 h 12 from latitude 41.29°.
Event window
Frost-level nights in December
The measured night-time normal is -7.5°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5081416
- NOAA station
- USC00258795 · VALLEY NWS
- Station distance
- 7.7 km from the place centre
- Coverage
- Strong coverage · 27 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.