Average annual temperature is 22.6 °C
Absolute maximum temperature: 45.3 °C
Absolute minimum temperature: -0.3 °C
Number of sunny days: 295 days
Number of rainy days: 68 days
Number of snow days: 2 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) | 21.2 | 25.6 | 26.3 | 37.1 | 36.2 | 41.8 | 45.3 | 43.6 | 42.4 | 37.8 | 33.2 | 24.8 |
| Average daytime temperature (°C) | 15.7 | 18.4 | 20.3 | 30.0 | 33.2 | 37.0 | 42.7 | 39.5 | 37.3 | 32.3 | 24.5 | 19.5 |
| Average temperature (°C) | 10.0 | 11.3 | 13.8 | 22.2 | 26.7 | 30.2 | 36.6 | 33.1 | 30.4 | 25.5 | 18.0 | 13.0 |
| Average night temperature (°C) | 6.1 | 6.2 | 8.7 | 14.2 | 19.6 | 22.2 | 29.5 | 27.2 | 23.4 | 19.1 | 12.7 | 8.0 |
| Absolute minimum temperature (°C) | -0.3 | -0.3 | 0.4 | 3.4 | 13.5 | 17.6 | 25.6 | 22.4 | 20.1 | 11.5 | 5.7 | 3.2 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.3 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.7 | 8.7 | 9.1 | 12.0 | 12.6 | 12.9 | 12.8 | 11.5 | 10.9 | 10.4 | 9.0 | 8.2 |
| Precipitation (mm) | 82 | 53 | 61 | 0 | 5 | 0 | 1 | 31 | 40 | 0 | 33 | 45 |
| Sunny days | 20 | 19 | 20 | 30 | 25 | 30 | 28 | 20 | 25 | 29 | 25 | 24 |
| Rainy days | 9 | 9 | 11 | 0 | 6 | 0 | 3 | 11 | 5 | 2 | 5 | 7 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Riverside is at