Average annual temperature is 10.9 °C
Absolute maximum temperature: 39.8 °C
Absolute minimum temperature: -22.6 °C
Number of sunny days: 224 days
Number of rainy days: 107 days
Number of snow days: 34 days
Look at detailed online map of Fairview Heights
* Weather data for Fairview 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) | 3.6 | 6.1 | 18.3 | 29.2 | 32.4 | 35.2 | 37.5 | 39.8 | 37.8 | 32.5 | 18.9 | 13.6 |
| Average daytime temperature (°C) | -3.0 | -0.1 | 6.0 | 16.2 | 25.7 | 29.8 | 29.8 | 31.0 | 27.9 | 16.8 | 11.4 | 5.5 |
| Average temperature (°C) | -6.1 | -4.8 | -0.7 | 9.6 | 19.1 | 24.1 | 23.9 | 25.0 | 21.8 | 11.8 | 5.6 | 0.8 |
| Average night temperature (°C) | -9.1 | -8.9 | -5.1 | 4.3 | 13.3 | 18.6 | 19.0 | 20.1 | 16.8 | 7.8 | 1.3 | -2.7 |
| Absolute minimum temperature (°C) | -20.8 | -22.6 | -12.0 | -5.5 | 3.0 | 12.2 | 13.1 | 14.4 | 11.6 | -6.5 | -6.7 | -7.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.6 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.4 | 7.2 | 7.1 | 9.7 | 11.9 | 13.0 | 12.0 | 11.5 | 10.1 | 7.0 | 6.9 | 5.7 |
| Precipitation (mm) | 73 | 38 | 40 | 24 | 49 | 52 | 133 | 38 | 20 | 98 | 9 | 62 |
| Sunny days | 20 | 17 | 18 | 17 | 16 | 19 | 14 | 19 | 20 | 18 | 23 | 23 |
| Rainy days | 3 | 3 | 5 | 11 | 15 | 11 | 17 | 12 | 10 | 12 | 4 | 4 |
| Snow days | 8 | 8 | 8 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 4 |
The best time to visit Fairview Heights during the most sunny months:
Months with the longest average daylight duration in Fairview Heights:
The largest precipitation sum in Fairview Heights is at