Average annual temperature is 11.4 °C
Absolute maximum temperature: 35.8 °C
Absolute minimum temperature: -16.7 °C
Number of sunny days: 176 days
Number of rainy days: 174 days
Number of snow days: 15 days
Look at detailed online map of South Chicago Heights
* Weather data for South Chicago Heights 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) | 14.9 | 15.6 | 20.7 | 25.6 | 31.7 | 32.9 | 32.6 | 35.8 | 32.6 | 28.0 | 20.6 | 14.6 |
| Average daytime temperature (°C) | 3.7 | 6.6 | 8.1 | 16.7 | 22.1 | 27.2 | 28.1 | 26.8 | 24.0 | 17.1 | 10.3 | 7.0 |
| Average temperature (°C) | 0.1 | 1.2 | 2.9 | 10.0 | 15.6 | 20.5 | 22.6 | 21.8 | 19.2 | 12.8 | 5.3 | 3.7 |
| Average night temperature (°C) | -2.7 | -2.7 | -0.7 | 4.6 | 10.4 | 15.0 | 18.0 | 17.9 | 15.3 | 9.5 | 1.3 | 1.2 |
| Absolute minimum temperature (°C) | -15.7 | -16.7 | -11.2 | -3.0 | 1.7 | 8.5 | 13.6 | 12.1 | 9.9 | -2.9 | -10.2 | -7.8 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| 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) | 2.9 | 7.7 | 6.4 | 9.1 | 10.3 | 11.9 | 11.5 | 10.5 | 8.1 | 6.4 | 7.0 | 3.9 |
| Precipitation (mm) | 66 | 100 | 114 | 62 | 50 | 61 | 190 | 141 | 113 | 140 | 48 | 86 |
| Sunny days | 11 | 18 | 10 | 15 | 20 | 17 | 13 | 16 | 11 | 10 | 21 | 14 |
| Rainy days | 10 | 9 | 20 | 15 | 11 | 13 | 18 | 15 | 19 | 21 | 7 | 16 |
| Snow days | 10 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 |
The best time to visit South Chicago Heights during the most sunny months:
The largest precipitation sum in South Chicago Heights is at