Riverside weather in December
December in Riverside averages 67°F by day and 43°F at night, with 1.5 inches of precipitation. It is the 12th-warmest and 3rd-wettest month of the year here.
- Average high
- 67°F-8° vs November
- Average low
- 43°F1 nights below freezing
- Precipitation
- 1.5 in3 days with 0.1 in. or more
- Snow
- 0.0 in0 days at 90°F+
Is December a good time to visit Riverside?
Yes. December is one of the most comfortable months in Riverside by our rule (highs of 62 to 86°F, lows of 42°F or more and under 4.5 inches of precipitation). The most comfortable months overall are October to May.
On December 15 the sun rises at 6:47 am and sets at 4:41 pm, giving 9h 54m of daylight. Daylight all year.
What to pack for Riverside in December
- T-shirts and a light jacket or sweater
- A warmer layer for evenings, which drop to around 43°F
Based on 30-year averages, not a forecast. Check the forecast a few days before you go.
December nearby
| City | Distance | High | Low | Precip. |
|---|---|---|---|---|
| Riverside | 67°F | 43°F | 1.5 in | |
| Jurupa Valley, CA | 5 mi | 67°F | 43°F | 1.5 in |
| Moreno Valley, CA | 10 mi | 67°F | 40°F | 2.0 in |
| Fontana, CA | 10 mi | 67°F | 44°F | 1.9 in |
| Corona, CA | 11 mi | 69°F | 40°F | 1.7 in |
| San Bernardino, CA | 12 mi | 67°F | 40°F | 2.0 in |
| Rialto, CA | 14 mi | 43°F | 29°F | 5.2 in |
Frequently asked questions
What is the weather like in Riverside in December?
In December, Riverside averages a high of 67°F and a low of 43°F, with 1.5 inches of precipitation (NOAA 1991-2020 normals).
Is December a good time to visit Riverside?
Yes. December is one of Riverside's most comfortable months by our rule: highs between 62°F and 86°F, lows of 42°F or more and modest rain.
Does it snow in Riverside in December?
Rarely. The December snowfall normal is under half an inch.
Before and after: Riverside in November and Riverside in January. All twelve months: Riverside weather by month.
NOAA NCEI 1991-2020 climate normals, station Riverside Municipal Airport, CA, 2.4 miles from the city center; snowfall from Riverside Fire Stn 3, CA.