Average annual temperature is 16.5 °C
Absolute maximum temperature: 36.9 °C
Absolute minimum temperature: -5.1 °C
Number of sunny days: 171 days
Number of rainy days: 193 days
Number of snow days: 1 day
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) | 20.3 | 26.0 | 25.4 | 28.2 | 31.8 | 34.3 | 35.4 | 36.9 | 32.2 | 30.9 | 25.6 | 18.7 |
| Average daytime temperature (°C) | 12.7 | 16.0 | 16.9 | 20.6 | 25.8 | 29.8 | 31.8 | 31.0 | 28.7 | 23.6 | 17.0 | 13.1 |
| Average temperature (°C) | 8.2 | 10.0 | 11.3 | 14.8 | 19.8 | 23.6 | 25.8 | 25.4 | 22.5 | 17.7 | 11.1 | 7.8 |
| Average night temperature (°C) | 4.8 | 6.1 | 6.6 | 10.0 | 14.8 | 18.3 | 21.3 | 21.1 | 17.7 | 12.9 | 6.7 | 4.1 |
| Absolute minimum temperature (°C) | -3.6 | -4.8 | -5.1 | 3.6 | 6.7 | 13.2 | 17.3 | 15.7 | 13.6 | 0.0 | -2.4 | -4.2 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.2 | 6.0 | 8.4 | 8.7 | 10.9 | 12.1 | 10.9 | 9.9 | 10.6 | 8.2 | 7.7 | 6.7 |
| Precipitation (mm) | 143 | 105 | 90 | 96 | 97 | 78 | 149 | 129 | 80 | 21 | 68 | 106 |
| Sunny days | 10 | 11 | 17 | 16 | 13 | 14 | 6 | 13 | 14 | 20 | 21 | 16 |
| Rainy days | 20 | 17 | 14 | 14 | 18 | 16 | 25 | 18 | 16 | 11 | 9 | 15 |
| Snow days | 1 | 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