Average annual temperature is 13.5 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: -6.9 °C
Number of sunny days: 188 days
Number of rainy days: 175 days
Number of snow days: 2 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) | 19.6 | 24.0 | 25.1 | 25.0 | 27.4 | 30.5 | 32.6 | 33.3 | 31.9 | 26.4 | 24.8 | 18.3 |
| Average daytime temperature (°C) | 11.1 | 13.9 | 15.1 | 19.2 | 21.6 | 25.3 | 29.9 | 29.2 | 25.7 | 20.4 | 14.4 | 11.1 |
| Average temperature (°C) | 5.5 | 8.3 | 8.6 | 12.5 | 15.8 | 18.9 | 23.3 | 22.6 | 19.2 | 13.6 | 8.0 | 5.4 |
| Average night temperature (°C) | 1.8 | 4.0 | 3.3 | 6.6 | 10.8 | 13.2 | 17.3 | 17.2 | 13.6 | 8.2 | 3.1 | 1.2 |
| Absolute minimum temperature (°C) | -6.6 | -6.9 | -6.8 | -1.5 | 1.8 | 7.9 | 14.1 | 14.0 | 9.5 | 2.7 | -5.6 | -6.2 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.0 | 6.4 | 8.4 | 8.8 | 10.2 | 10.9 | 12.2 | 10.6 | 10.7 | 9.6 | 7.6 | 6.6 |
| Precipitation (mm) | 119 | 89 | 83 | 118 | 57 | 87 | 34 | 93 | 32 | 21 | 24 | 93 |
| Sunny days | 14 | 13 | 20 | 14 | 12 | 11 | 9 | 14 | 19 | 21 | 22 | 19 |
| Rainy days | 15 | 15 | 11 | 16 | 19 | 19 | 22 | 17 | 11 | 10 | 8 | 12 |
| Snow days | 2 | 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