Average annual temperature is 11.7 °C
Absolute maximum temperature: 33.2 °C
Absolute minimum temperature: -17.2 °C
Number of sunny days: 174 days
Number of rainy days: 180 days
Number of snow days: 11 days
Look at detailed online map of Riverdale (historical)
* Weather data for Riverdale (historical) 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) | 15.4 | 17.9 | 16.9 | 26.7 | 31.8 | 32.8 | 32.3 | 31.2 | 33.2 | 29.7 | 18.1 | 16.7 |
| Average daytime temperature (°C) | 4.7 | 7.7 | 8.3 | 16.8 | 22.2 | 26.8 | 28.9 | 27.1 | 24.7 | 17.3 | 10.6 | 8.3 |
| Average temperature (°C) | 1.2 | 1.6 | 3.3 | 10.1 | 15.4 | 20.7 | 23.4 | 21.6 | 19.4 | 12.9 | 5.4 | 4.7 |
| Average night temperature (°C) | -1.7 | -2.6 | -0.4 | 4.3 | 9.3 | 15.0 | 18.3 | 16.7 | 14.7 | 9.3 | 1.6 | 2.0 |
| Absolute minimum temperature (°C) | -17.2 | -16.0 | -6.8 | -1.8 | 2.7 | 10.3 | 14.7 | 10.8 | 9.0 | -2.0 | -6.8 | -3.9 |
| 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) | 3.4 | 7.4 | 6.6 | 9.0 | 10.6 | 11.3 | 11.9 | 10.7 | 9.2 | 6.6 | 6.9 | 3.6 |
| Precipitation (mm) | 86 | 82 | 111 | 83 | 37 | 57 | 94 | 130 | 37 | 83 | 19 | 55 |
| Sunny days | 10 | 18 | 13 | 12 | 21 | 16 | 11 | 15 | 17 | 10 | 20 | 11 |
| Rainy days | 16 | 9 | 15 | 18 | 10 | 14 | 20 | 16 | 13 | 20 | 9 | 20 |
| Snow days | 5 | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 |
The best time to visit Riverdale (historical) during the most sunny months:
The largest precipitation sum in Riverdale (historical) is at