Average annual temperature is 15.6 °C
Absolute maximum temperature: 37.8 °C
Absolute minimum temperature: -7.6 °C
Number of sunny days: 208 days
Number of rainy days: 156 days
Number of snow days: 1 day
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) | 19.6 | 25.6 | 26.3 | 31.8 | 31.2 | 32.1 | 37.8 | 35.7 | 36.3 | 28.9 | 27.5 | 21.2 |
| Average daytime temperature (°C) | 12.1 | 15.1 | 16.1 | 23.5 | 23.9 | 28.3 | 33.1 | 31.3 | 27.8 | 22.5 | 15.4 | 12.5 |
| Average temperature (°C) | 7.1 | 9.1 | 9.7 | 16.3 | 17.6 | 21.9 | 26.5 | 25.1 | 21.8 | 16.2 | 9.0 | 6.7 |
| Average night temperature (°C) | 3.3 | 4.5 | 4.3 | 9.9 | 12.3 | 16.2 | 21.3 | 20.2 | 16.8 | 11.3 | 4.2 | 2.4 |
| Absolute minimum temperature (°C) | -3.6 | -7.6 | -3.9 | 1.8 | 6.1 | 12.1 | 18.1 | 16.1 | 10.8 | 5.2 | -5.8 | -4.1 |
| 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 | 14.5 | 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) | 5.7 | 7.0 | 7.9 | 9.7 | 10.1 | 10.6 | 12.0 | 10.7 | 8.9 | 9.0 | 7.9 | 6.2 |
| Precipitation (mm) | 95 | 91 | 36 | 108 | 75 | 112 | 127 | 36 | 76 | 29 | 47 | 132 |
| Sunny days | 16 | 17 | 15 | 19 | 15 | 16 | 12 | 14 | 16 | 22 | 26 | 20 |
| Rainy days | 15 | 10 | 16 | 11 | 16 | 14 | 19 | 17 | 14 | 9 | 4 | 11 |
| Snow days | 0 | 1 | 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