Average annual temperature is 19.0 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: -1.6 °C
Number of sunny days: 186 days
Number of rainy days: 179 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) | 23.2 | 27.7 | 30.0 | 30.7 | 34.3 | 34.1 | 37.9 | 37.7 | 33.0 | 28.8 | 27.6 | 23.5 |
| Average daytime temperature (°C) | 16.5 | 20.2 | 21.8 | 25.0 | 26.6 | 30.0 | 34.7 | 33.9 | 28.7 | 24.2 | 18.7 | 15.7 |
| Average temperature (°C) | 11.1 | 14.3 | 15.7 | 18.8 | 20.9 | 24.4 | 28.6 | 27.9 | 23.4 | 18.8 | 13.2 | 10.6 |
| Average night temperature (°C) | 6.9 | 10.0 | 10.4 | 13.3 | 15.8 | 19.8 | 23.9 | 23.4 | 18.8 | 14.3 | 8.9 | 6.7 |
| Absolute minimum temperature (°C) | -1.6 | -0.6 | 0.5 | 5.4 | 9.7 | 15.6 | 20.2 | 21.0 | 15.2 | 8.5 | 0.5 | -1.6 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.4 | 12.4 | 11.3 | 10.4 | 10.0 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.2 | 7.2 | 8.6 | 9.9 | 9.5 | 10.5 | 11.1 | 11.1 | 10.3 | 9.0 | 7.2 | 6.7 |
| Precipitation (mm) | 135 | 100 | 94 | 124 | 109 | 101 | 155 | 133 | 68 | 89 | 51 | 133 |
| Sunny days | 16 | 16 | 20 | 14 | 10 | 12 | 4 | 9 | 17 | 25 | 22 | 21 |
| Rainy days | 15 | 12 | 11 | 16 | 21 | 18 | 27 | 22 | 13 | 6 | 8 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Riverdale is at