Average annual temperature is 12.9 °C
Absolute maximum temperature: 33.0 °C
Absolute minimum temperature: -7.5 °C
Number of sunny days: 170 days
Number of rainy days: 189 days
Number of snow days: 6 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) | 18.5 | 22.1 | 23.8 | 25.5 | 25.7 | 30.0 | 33.0 | 32.3 | 31.0 | 26.3 | 23.9 | 16.6 |
| Average daytime temperature (°C) | 11.9 | 14.3 | 15.0 | 18.8 | 21.0 | 24.5 | 28.9 | 28.4 | 25.3 | 20.0 | 14.3 | 11.0 |
| Average temperature (°C) | 5.2 | 8.3 | 8.2 | 12.0 | 15.1 | 18.2 | 22.2 | 21.6 | 18.4 | 12.7 | 7.3 | 4.6 |
| Average night temperature (°C) | 0.7 | 3.3 | 2.8 | 6.1 | 10.2 | 12.4 | 16.2 | 16.1 | 12.7 | 7.0 | 2.3 | 0.2 |
| Absolute minimum temperature (°C) | -7.5 | -6.7 | -7.3 | -0.4 | 1.5 | 6.9 | 13.3 | 12.5 | 8.2 | 1.1 | -6.1 | -7.2 |
| 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) | 5.4 | 6.3 | 8.5 | 8.7 | 10.3 | 10.8 | 12.2 | 10.7 | 11.0 | 9.1 | 7.2 | 6.3 |
| Precipitation (mm) | 117 | 90 | 77 | 98 | 69 | 65 | 47 | 109 | 25 | 14 | 21 | 93 |
| Sunny days | 16 | 9 | 13 | 15 | 11 | 11 | 8 | 14 | 17 | 20 | 20 | 16 |
| Rainy days | 14 | 18 | 17 | 15 | 20 | 19 | 23 | 17 | 13 | 11 | 9 | 13 |
| Snow days | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit Riverside during the most sunny months:
The largest precipitation sum in Riverside is at