Average annual temperature is 11.4 °C
Absolute maximum temperature: 34.4 °C
Absolute minimum temperature: -21.4 °C
Number of sunny days: 159 days
Number of rainy days: 198 days
Number of snow days: 8 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) | 18.8 | 18.6 | 15.0 | 31.2 | 27.5 | 32.9 | 31.4 | 29.2 | 34.4 | 27.2 | 18.5 | 15.0 |
| Average daytime temperature (°C) | 7.1 | 6.5 | 8.8 | 17.1 | 20.4 | 24.2 | 28.2 | 25.7 | 22.8 | 18.2 | 9.8 | 8.1 |
| Average temperature (°C) | 3.2 | 1.7 | 3.6 | 11.0 | 14.3 | 18.4 | 23.2 | 20.9 | 18.2 | 13.4 | 4.8 | 3.8 |
| Average night temperature (°C) | -0.1 | -2.6 | -0.8 | 6.0 | 8.5 | 13.6 | 19.3 | 17.0 | 14.6 | 9.6 | 0.9 | 0.5 |
| Absolute minimum temperature (°C) | -4.8 | -21.4 | -5.9 | -2.0 | 2.7 | 6.9 | 14.6 | 12.4 | 7.8 | 3.1 | -4.9 | -6.6 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.6 | 6.5 | 7.5 | 8.6 | 12.2 | 10.7 | 11.2 | 9.7 | 7.7 | 7.5 | 7.1 | 5.1 |
| Precipitation (mm) | 161 | 51 | 111 | 139 | 70 | 81 | 202 | 139 | 233 | 97 | 65 | 215 |
| Sunny days | 9 | 17 | 12 | 15 | 19 | 5 | 7 | 9 | 13 | 15 | 20 | 18 |
| Rainy days | 19 | 9 | 17 | 15 | 12 | 25 | 24 | 22 | 17 | 16 | 10 | 12 |
| Snow days | 3 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Riverside during the most sunny months:
The largest precipitation sum in Riverside is at