Average annual temperature is 15.5 °C
Absolute maximum temperature: 38.4 °C
Absolute minimum temperature: -11.8 °C
Number of sunny days: 236 days
Number of rainy days: 124 days
Number of snow days: 5 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) | 15.4 | 19.8 | 27.2 | 32.8 | 31.7 | 36.2 | 36.5 | 38.4 | 36.3 | 32.5 | 22.9 | 18.0 |
| Average daytime temperature (°C) | 8.9 | 11.1 | 15.2 | 23.2 | 26.1 | 30.5 | 32.5 | 33.7 | 30.6 | 22.4 | 14.1 | 10.9 |
| Average temperature (°C) | 3.1 | 4.1 | 8.4 | 15.2 | 20.1 | 24.7 | 27.0 | 27.8 | 24.5 | 16.6 | 8.6 | 5.8 |
| Average night temperature (°C) | -0.9 | -1.4 | 3.1 | 8.9 | 14.6 | 19.4 | 22.0 | 22.4 | 19.2 | 11.6 | 3.8 | 2.1 |
| Absolute minimum temperature (°C) | -11.8 | -11.0 | -7.3 | -0.4 | 5.4 | 15.6 | 17.8 | 16.4 | 14.9 | -3.0 | -9.6 | -4.2 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| 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) | 7.3 | 8.2 | 8.4 | 10.2 | 10.4 | 12.1 | 12.0 | 12.1 | 10.2 | 8.4 | 7.6 | 6.0 |
| Precipitation (mm) | 43 | 40 | 16 | 41 | 67 | 62 | 87 | 32 | 28 | 115 | 54 | 58 |
| Sunny days | 23 | 18 | 18 | 23 | 13 | 13 | 18 | 24 | 24 | 20 | 23 | 19 |
| Rainy days | 8 | 9 | 13 | 7 | 18 | 17 | 13 | 7 | 6 | 11 | 5 | 10 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
The best time to visit Riverdale during the most sunny months:
The largest precipitation sum in Riverdale is at