Average annual temperature is 12.9 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: -9.0 °C
Number of sunny days: 167 days
Number of rainy days: 186 days
Number of snow days: 12 days
Look at detailed online map of Riverdale
* Weather data for Riverdale 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) | 17.4 | 20.8 | 22.9 | 27.2 | 31.5 | 33.7 | 32.5 | 33.7 | 33.3 | 29.5 | 24.1 | 16.3 |
| Average daytime temperature (°C) | 6.8 | 11.4 | 11.9 | 18.1 | 23.2 | 27.0 | 29.2 | 28.2 | 26.0 | 19.1 | 12.4 | 9.1 |
| Average temperature (°C) | 3.0 | 4.7 | 5.4 | 11.7 | 16.9 | 21.1 | 23.9 | 22.7 | 20.1 | 14.0 | 6.5 | 4.6 |
| Average night temperature (°C) | -0.1 | 0.2 | 0.9 | 6.2 | 11.3 | 15.6 | 19.3 | 17.7 | 14.9 | 9.8 | 2.5 | 1.5 |
| Absolute minimum temperature (°C) | -8.8 | -9.0 | -7.6 | 0.4 | 3.4 | 11.1 | 15.3 | 12.0 | 9.8 | -2.5 | -7.5 | -4.5 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.7 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 4.2 | 7.5 | 7.3 | 8.8 | 10.3 | 10.5 | 11.9 | 11.2 | 9.9 | 7.3 | 7.5 | 4.7 |
| Precipitation (mm) | 137 | 46 | 151 | 72 | 71 | 112 | 116 | 107 | 37 | 82 | 27 | 47 |
| Sunny days | 5 | 18 | 15 | 13 | 18 | 12 | 7 | 14 | 18 | 11 | 24 | 12 |
| Rainy days | 19 | 10 | 12 | 17 | 13 | 18 | 24 | 17 | 12 | 20 | 6 | 18 |
| Snow days | 7 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Riverdale during the most sunny months:
The largest precipitation sum in Riverdale is at