United States · 1991–2020 normal
Riverside in
December.
Typical December weather in Riverside: 5.2°C by day, -2.8°C at night, 78 mm of rain over 8.4 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high5.2°C
Typical low-2.8°C
Rain78 mm
Wet days8.4
Comfort score 5 this month (September leads the year at 81). Daylight is calculated as 9 h 22 from latitude 39.78°.
Event window
Frost-level nights in December
The measured night-time normal is -2.8°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4522586
- NOAA station
- USC00332067 · DAYTON MCD
- Station distance
- 5.7 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.