Average annual temperature is 19.3 °C
Absolute maximum temperature: 43.5 °C
Absolute minimum temperature: -5.9 °C
Number of sunny days: 299 days
Number of rainy days: 66 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) | 23.1 | 25.4 | 28.4 | 34.8 | 35.7 | 43.5 | 42.6 | 41.3 | 39.3 | 32.7 | 31.7 | 24.7 |
| Average daytime temperature (°C) | 15.3 | 16.3 | 22.2 | 26.8 | 31.0 | 37.2 | 38.7 | 36.8 | 34.4 | 26.7 | 19.7 | 16.2 |
| Average temperature (°C) | 8.0 | 8.3 | 14.4 | 18.0 | 23.2 | 29.7 | 32.0 | 30.2 | 27.1 | 19.4 | 12.0 | 8.5 |
| Average night temperature (°C) | 2.1 | 2.5 | 7.5 | 10.4 | 15.5 | 21.3 | 24.6 | 23.4 | 19.8 | 13.1 | 6.3 | 2.3 |
| Absolute minimum temperature (°C) | -4.2 | -5.9 | 1.1 | 3.6 | 11.4 | 15.6 | 20.7 | 18.2 | 16.6 | -0.8 | -0.6 | -3.9 |
| 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) | 10.3 | 11.0 | 12.0 | 13.0 | 13.8 | 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) | 8.3 | 8.3 | 10.2 | 11.6 | 11.6 | 12.8 | 13.0 | 11.6 | 10.9 | 9.8 | 8.0 | 8.4 |
| Precipitation (mm) | 17 | 4 | 0 | 0 | 13 | 1 | 1 | 16 | 4 | 17 | 6 | 12 |
| Sunny days | 28 | 22 | 30 | 28 | 18 | 27 | 27 | 22 | 22 | 25 | 24 | 26 |
| Rainy days | 3 | 6 | 1 | 2 | 13 | 3 | 4 | 9 | 8 | 6 | 6 | 5 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Riverside is at