Average annual temperature is 17.7 °C
Absolute maximum temperature: 40.0 °C
Absolute minimum temperature: -3.6 °C
Number of sunny days: 213 days
Number of rainy days: 152 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 | 25.9 | 26.2 | 28.3 | 32.3 | 38.1 | 40.0 | 39.7 | 36.4 | 31.9 | 27.6 | 18.5 |
| Average daytime temperature (°C) | 12.6 | 14.9 | 17.7 | 21.9 | 27.5 | 32.4 | 34.1 | 34.4 | 30.6 | 24.1 | 17.1 | 13.2 |
| Average temperature (°C) | 7.6 | 8.8 | 11.6 | 15.9 | 21.6 | 26.4 | 28.2 | 28.6 | 24.6 | 18.6 | 11.7 | 8.3 |
| Average night temperature (°C) | 3.9 | 4.4 | 7.1 | 11.0 | 16.5 | 21.2 | 23.4 | 23.9 | 19.7 | 14.6 | 7.4 | 4.7 |
| Absolute minimum temperature (°C) | -3.4 | -3.6 | -1.7 | 6.7 | 8.1 | 17.6 | 19.0 | 17.7 | 15.1 | 2.7 | 0.5 | -0.5 |
| 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) | 5.9 | 5.9 | 7.7 | 8.9 | 11.2 | 12.5 | 11.4 | 11.4 | 10.6 | 8.1 | 7.9 | 6.9 |
| Precipitation (mm) | 100 | 132 | 212 | 120 | 91 | 51 | 106 | 59 | 30 | 132 | 50 | 63 |
| Sunny days | 17 | 13 | 15 | 15 | 16 | 13 | 15 | 21 | 23 | 19 | 24 | 22 |
| Rainy days | 14 | 15 | 16 | 15 | 15 | 17 | 16 | 10 | 7 | 12 | 6 | 9 |
| 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