Average annual temperature is 8.9 °C
Absolute maximum temperature: 35.8 °C
Absolute minimum temperature: -24.8 °C
Number of sunny days: 194 days
Number of rainy days: 136 days
Number of snow days: 35 days
Look at detailed online map of Granite City (historical)
* Weather data for Granite City (historical) 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) | 4.3 | 8.0 | 9.3 | 26.5 | 32.0 | 33.0 | 32.1 | 35.8 | 34.5 | 28.9 | 16.6 | 11.0 |
| Average daytime temperature (°C) | -0.9 | 1.0 | 3.6 | 13.4 | 21.5 | 26.9 | 27.6 | 26.8 | 23.4 | 14.7 | 7.0 | 4.3 |
| Average temperature (°C) | -4.6 | -4.3 | -1.6 | 7.1 | 14.5 | 20.5 | 21.7 | 21.0 | 18.1 | 10.5 | 2.4 | 0.7 |
| Average night temperature (°C) | -7.7 | -8.7 | -6.0 | 2.2 | 8.5 | 14.6 | 16.2 | 16.2 | 14.0 | 7.0 | -1.0 | -2.0 |
| Absolute minimum temperature (°C) | -24.8 | -24.7 | -13.9 | -5.1 | -0.3 | 6.6 | 11.7 | 9.5 | 7.1 | -4.4 | -12.5 | -8.5 |
| 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) | 9.3 | 10.4 | 11.9 | 13.5 | 14.8 | 15.5 | 15.2 | 14.0 | 12.5 | 11.0 | 9.6 | 8.9 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 3.8 | 6.6 | 6.9 | 7.9 | 10.1 | 12.7 | 12.8 | 11.0 | 8.5 | 6.0 | 6.5 | 4.5 |
| Precipitation (mm) | 50 | 62 | 86 | 114 | 43 | 49 | 22 | 58 | 67 | 99 | 19 | 35 |
| Sunny days | 16 | 13 | 12 | 13 | 19 | 20 | 13 | 15 | 12 | 17 | 22 | 22 |
| Rainy days | 6 | 6 | 9 | 15 | 12 | 10 | 18 | 16 | 18 | 12 | 7 | 7 |
| Snow days | 9 | 9 | 10 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 2 |
The best time to visit Granite City (historical) during the most sunny months:
Months with the longest average daylight duration in Granite City (historical):
The largest precipitation sum in Granite City (historical) is at