Average annual temperature is 17.4 °C
Absolute maximum temperature: 35.7 °C
Absolute minimum temperature: -4.0 °C
Number of sunny days: 168 days
Number of rainy days: 197 days
Look at detailed online map of Oak Forest
* Weather data for Oak Forest 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) | 20.9 | 25.1 | 25.8 | 28.4 | 30.6 | 32.8 | 35.4 | 35.7 | 34.5 | 28.2 | 25.7 | 20.7 |
| Average daytime temperature (°C) | 14.8 | 17.9 | 18.7 | 22.3 | 25.1 | 29.3 | 32.4 | 32.4 | 28.4 | 23.0 | 17.4 | 14.0 |
| Average temperature (°C) | 9.7 | 12.5 | 13.0 | 16.3 | 19.8 | 23.6 | 26.6 | 26.5 | 22.9 | 17.6 | 11.9 | 8.8 |
| Average night temperature (°C) | 5.6 | 8.5 | 8.0 | 11.4 | 15.4 | 18.6 | 21.7 | 21.9 | 18.0 | 12.9 | 7.5 | 4.4 |
| Absolute minimum temperature (°C) | -3.2 | -2.6 | -4.0 | 4.8 | 6.4 | 14.9 | 18.8 | 17.4 | 13.5 | 6.4 | -2.1 | -2.7 |
| 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) | 5.6 | 6.0 | 8.4 | 9.2 | 9.8 | 11.1 | 11.5 | 10.7 | 10.1 | 8.7 | 6.5 | 6.6 |
| Precipitation (mm) | 116 | 147 | 150 | 110 | 105 | 97 | 167 | 170 | 68 | 46 | 67 | 70 |
| Sunny days | 13 | 10 | 18 | 13 | 10 | 10 | 5 | 9 | 18 | 21 | 20 | 21 |
| Rainy days | 18 | 18 | 13 | 17 | 21 | 20 | 26 | 22 | 12 | 10 | 10 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Oak Forest during the most sunny months:
The largest precipitation sum in Oak Forest is at