Riverside
December
Weather in Riverside for December 2025
Your guide to Riverside weather in December - trends and predictions
In general, the average temperature in Riverside at the beginning of December is 22 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.3 °F by the end of December.
Riverside experiences moderate rainfall in December, with an average of 8 rainy days and a total precipitation of 40.9 mm.
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Temperatures
Rain 🌧️
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23
Dry days
8
Rainy days
0
Snow days
20°/10°
Temperatures
8 km/h
Avg max wind
41 %
Avg humidity
Riverside in December average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  20° | 2  20° | 3 21° | 4  22° | 5 25° | 6 24° | |
| 7 22° | 8 20° | 9 21° | 10 21° | 11 21° | 12 16° | 13 18° |
| 14 19° | 15 21° | 16 22° | 17 24° | 18  23° | 19  20° | 20 21° |
| 21  20° | 22 19° | 23 20° | 24 19° | 25 20° | 26 20° | 27 17° |
| 28 18° | 29 16° | 30 16° | 31  14° |
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Temperatures trend during December in Riverside
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 | Partly cloudy | 20° /8° | 0 mm | 6 | |
| Dec. 2 | Sunny | 20° /7° | 0 mm | 5 | |
| Dec. 3 | Sunny | 21° /8° | 0 mm | 5 | |
| Dec. 4 | Overcast | 22° /9° | 0 mm | 6 | |
| Dec. 5 | Sunny | 25° /10° | 0 mm | 7 | |
| Dec. 6 | Sunny | 24° /11° | 0 mm | 7 | |
| Dec. 7 | Partly cloudy | 22° /9° | 0 mm | 6 | |
| Dec. 8 | Sunny | 20° /6° | 0 mm | 6 | |
| Dec. 9 | Sunny | 21° /6° | 0 mm | 6 | |
| Dec. 10 | Sunny | 21° /5° | 0 mm | 6 | |
| Dec. 11 | Overcast | 21° /9° | 0 mm | 5 | |
| Dec. 12 | Sunny | 16° /9° | 0 mm | 4 | |
| Dec. 13 | Sunny | 18° /6° | 0 mm | 5 | |
| Dec. 14 | Overcast | 19° /10° | 0 mm | 5 | |
| Dec. 15 | Partly cloudy | 21° /9° | 0 mm | 6 | |
| Dec. 16 | Sunny | 22° /10° | 0 mm | 6 | |
| Dec. 17 | Partly cloudy | 24° /10° | 0 mm | 6 | |
| Dec. 18 | Cloudy | 23° /14° | 0 mm | 6 | |
| Dec. 19 | Light rain shower | 20° /11° | 3.7 mm | 5 | |
| Dec. 20 | Light rain shower | 21° /11° | 4.3 mm | 5 | |
| Dec. 21 | Patchy light rain with thunder | 20° /11° | 3 mm | 5 | |
| Dec. 22 | Overcast | 19° /10° | 1.1 mm | 4 | |
| Dec. 23 | Partly cloudy | 20° /9° | 0 mm | 5 | |
| Dec. 24 | Partly cloudy | 19° /9° | 0 mm | 5 | |
| Dec. 25 | Sunny | 20° /8° | 0 mm | 6 | |
| Dec. 26 | Cloudy | 20° /10° | 0 mm | 5 | |
| Dec. 27 | Patchy rain possible | 17° /10° | 1.8 mm | 4 | |
| Dec. 28 | Overcast | 18° /8° | 0.7 mm | 5 | |
| Dec. 29 | Patchy rain possible | 16° /9° | 0 mm | 4 | |
| Dec. 30 | Patchy rain possible | 16° /8° | 2.9 mm | 4 | |
| Dec. 31 | Moderate rain at times | 14° /9° | 6 mm | 3 | |
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Important Notice
Our weather forecast for Riverside in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Riverside forecast closer to your planned date for the most up-to-date weather information.
Riverside in December - FAQ
What are the expected maximum and minimum temperatures in Riverside during December?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Riverside during December?
In December, Riverside can expect light to moderate rainfall, totaling 40.9 mm across approximately 8 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Riverside during December?
The average wind speed in Riverside during December is 8 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Riverside
Explore the daily rainfall trends and prepare for Riversides December weather 💧
UV exposure in Riverside during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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