Average annual temperature is 17.2 °C
Absolute maximum temperature: 35.9 °C
Absolute minimum temperature: -2.9 °C
Number of sunny days: 198 days
Number of rainy days: 167 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) | 20.5 | 25.7 | 27.4 | 29.6 | 31.8 | 33.1 | 35.9 | 35.7 | 34.6 | 28.1 | 26.4 | 20.8 |
| Average daytime temperature (°C) | 14.6 | 17.7 | 18.9 | 22.9 | 25.1 | 29.1 | 33.3 | 32.3 | 28.5 | 23.3 | 17.3 | 14.3 |
| Average temperature (°C) | 9.4 | 12.2 | 12.8 | 16.7 | 19.4 | 22.9 | 27.0 | 26.2 | 22.5 | 17.3 | 11.3 | 8.8 |
| Average night temperature (°C) | 5.3 | 7.9 | 7.5 | 11.0 | 14.6 | 17.8 | 22.1 | 21.5 | 17.6 | 12.3 | 6.8 | 4.7 |
| Absolute minimum temperature (°C) | -2.8 | -2.8 | -1.7 | 3.4 | 7.7 | 13.2 | 19.4 | 19.6 | 13.8 | 7.7 | -2.4 | -2.9 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 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) | 6.4 | 7.0 | 8.2 | 9.0 | 9.5 | 10.8 | 11.6 | 10.9 | 10.0 | 8.9 | 7.7 | 6.3 |
| Precipitation (mm) | 123 | 89 | 106 | 142 | 47 | 116 | 40 | 150 | 56 | 42 | 50 | 149 |
| Sunny days | 17 | 16 | 17 | 14 | 16 | 14 | 7 | 11 | 19 | 24 | 22 | 21 |
| Rainy days | 14 | 12 | 14 | 16 | 15 | 16 | 24 | 20 | 11 | 7 | 8 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Riverside during the most sunny months:
The largest precipitation sum in Riverside is at