United States · 1991–2020 normal
Ottumwa in
December.
Typical December weather in Ottumwa: 2.5°C by day, -6.5°C at night, 36 mm of rain over 4.6 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high2.5°C
Typical low-6.5°C
Rain36 mm
Wet days4.6
Comfort score 5 this month (September leads the year at 82). Daylight is calculated as 9 h 14 from latitude 41.02°.
Event window
Frost-level nights in December
The measured night-time normal is -6.5°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4870380
- NOAA station
- USW00014950 · OTTUMWA IND AP
- Station distance
- 9.4 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.