United States · 1991–2020 normal
Roundup in
December.
Typical December weather in Roundup: 3.3°C by day, -9°C at night, 18 mm of rain over 3.2 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high3.3°C
Typical low-9°C
Rain18 mm
Wet days3.2
Comfort score 5 this month (September leads the year at 80). Daylight is calculated as 8 h 36 from latitude 46.45°.
Event window
Frost-level nights in December
The measured night-time normal is -9°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5674878
- NOAA station
- USC00247214 · ROUNDUP
- Station distance
- 1.1 km from the place centre
- Coverage
- Strong coverage · 28 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.