Average annual temperature is 15.4 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -6.4 °C
Number of sunny days: 175 days
Number of rainy days: 187 days
Number of snow days: 3 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) | 19.0 | 24.6 | 24.3 | 27.7 | 28.9 | 32.9 | 36.5 | 36.7 | 33.0 | 29.4 | 25.9 | 18.5 |
| Average daytime temperature (°C) | 11.2 | 14.7 | 15.3 | 20.5 | 25.0 | 29.1 | 31.2 | 29.9 | 27.3 | 21.8 | 15.8 | 11.8 |
| Average temperature (°C) | 6.8 | 8.7 | 9.2 | 14.1 | 18.9 | 22.5 | 25.4 | 24.4 | 21.4 | 16.1 | 9.8 | 6.6 |
| Average night temperature (°C) | 3.5 | 4.6 | 4.6 | 9.0 | 13.8 | 17.1 | 20.9 | 20.0 | 16.5 | 11.9 | 5.6 | 3.1 |
| Absolute minimum temperature (°C) | -4.2 | -5.6 | -6.4 | 1.7 | 5.9 | 11.4 | 17.7 | 14.4 | 12.4 | -0.5 | -4.1 | -5.4 |
| 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) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| 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) | 4.7 | 6.4 | 8.0 | 9.2 | 10.9 | 11.2 | 11.3 | 10.1 | 10.4 | 7.8 | 7.8 | 6.2 |
| Precipitation (mm) | 152 | 114 | 154 | 94 | 77 | 145 | 184 | 124 | 72 | 49 | 57 | 78 |
| Sunny days | 11 | 12 | 16 | 14 | 16 | 15 | 9 | 13 | 14 | 19 | 21 | 15 |
| Rainy days | 20 | 14 | 14 | 16 | 15 | 15 | 22 | 18 | 16 | 12 | 9 | 16 |
| Snow days | 0 | 2 | 1 | 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