Average annual temperature is 10.6 °C
Absolute maximum temperature: 30.3 °C
Absolute minimum temperature: -14.5 °C
Number of sunny days: 137 days
Number of rainy days: 207 days
Number of snow days: 21 days
Look at detailed online map of Riverside
* Weather data for Riverside United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 16.0 | 18.5 | 18.1 | 27.0 | 27.1 | 30.1 | 30.3 | 30.0 | 30.0 | 25.4 | 17.9 | 14.9 |
| Average daytime temperature (°C) | 5.3 | 9.0 | 8.4 | 17.1 | 19.5 | 23.2 | 26.7 | 25.4 | 22.1 | 16.4 | 9.5 | 6.7 |
| Average temperature (°C) | 1.8 | 2.8 | 2.8 | 10.5 | 13.3 | 17.6 | 21.6 | 20.2 | 16.9 | 11.9 | 4.5 | 3.2 |
| Average night temperature (°C) | -0.9 | -2.1 | -1.2 | 5.0 | 7.5 | 12.5 | 17.2 | 15.9 | 12.8 | 8.3 | 0.7 | 0.3 |
| Absolute minimum temperature (°C) | -8.4 | -14.5 | -9.6 | -3.8 | 0.7 | 7.4 | 13.2 | 10.2 | 8.1 | -0.4 | -8.3 | -6.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.4 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 2.7 | 6.2 | 6.3 | 8.4 | 10.5 | 10.8 | 11.5 | 10.6 | 8.7 | 6.6 | 6.7 | 3.7 |
| Precipitation (mm) | 110 | 69 | 96 | 93 | 81 | 109 | 108 | 95 | 72 | 92 | 55 | 77 |
| Sunny days | 4 | 10 | 9 | 14 | 20 | 11 | 4 | 8 | 15 | 15 | 17 | 10 |
| Rainy days | 18 | 14 | 21 | 16 | 11 | 19 | 27 | 23 | 15 | 16 | 10 | 17 |
| Snow days | 9 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 4 |
The best time to visit Riverside during the most sunny months: