Average annual temperature is 12.1 °C
Absolute maximum temperature: 33.1 °C
Absolute minimum temperature: -13.6 °C
Number of sunny days: 140 days
Number of rainy days: 213 days
Number of snow days: 12 days
Look at detailed online map of Saint Clair
* Weather data for Saint Clair 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) | 17.7 | 20.5 | 21.4 | 27.8 | 29.6 | 33.1 | 31.3 | 31.4 | 31.9 | 26.9 | 19.1 | 17.5 |
| Average daytime temperature (°C) | 7.7 | 10.9 | 10.4 | 18.9 | 21.5 | 25.3 | 27.8 | 26.6 | 23.6 | 17.9 | 11.3 | 8.8 |
| Average temperature (°C) | 3.6 | 4.4 | 4.7 | 11.9 | 15.1 | 19.2 | 22.5 | 21.2 | 18.2 | 13.1 | 5.9 | 4.9 |
| Average night temperature (°C) | 0.8 | -0.5 | 0.2 | 6.4 | 9.2 | 13.8 | 18.3 | 16.7 | 13.8 | 8.9 | 1.7 | 1.7 |
| Absolute minimum temperature (°C) | -6.7 | -13.6 | -8.0 | -1.9 | 2.0 | 8.5 | 13.6 | 11.2 | 8.2 | 0.8 | -7.0 | -5.1 |
| 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 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.4 |
| 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) | 2.8 | 6.2 | 6.1 | 8.6 | 10.4 | 10.8 | 11.0 | 10.8 | 8.7 | 6.6 | 6.7 | 4.1 |
| Precipitation (mm) | 126 | 77 | 99 | 63 | 88 | 168 | 146 | 96 | 52 | 125 | 46 | 76 |
| Sunny days | 5 | 11 | 10 | 14 | 22 | 13 | 4 | 7 | 13 | 13 | 18 | 10 |
| Rainy days | 21 | 16 | 18 | 16 | 9 | 17 | 27 | 24 | 17 | 18 | 10 | 20 |
| Snow days | 5 | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 |
The best time to visit Saint Clair during the most sunny months:
The largest precipitation sum in Saint Clair is at