United States · 1991–2020 normal
Mount Vernon in
December.
Typical December weather in Mount Vernon: 1.4°C by day, -7°C at night, 42 mm of rain over 6.4 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high1.4°C
Typical low-7°C
Rain42 mm
Wet days6.4
Comfort score 5 this month (September leads the year at 79). Daylight is calculated as 9 h 08 from latitude 41.92°.
Event window
Frost-level nights in December
The measured night-time normal is -7°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4868251
- NOAA station
- USC00131319 · CEDAR RAPIDS #1
- Station distance
- 20.1 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.