United States · 1991–2020 normal
Sumner in
December.
Typical December weather in Sumner: -0.8°C by day, -9.8°C at night, 41 mm of rain over 5.9 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high-0.8°C
Typical low-9.8°C
Rain41 mm
Wet days5.9
Comfort score 5 this month (September leads the year at 77). Daylight is calculated as 9 h 02 from latitude 42.85°.
Event window
Frost-level nights in December
The measured night-time normal is -9.8°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4877907
- NOAA station
- USC00138339 · TRIPOLI
- Station distance
- 14.1 km from the place centre
- Coverage
- Strong coverage · 29 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.