Average annual temperature is 9.4 °C
Absolute maximum temperature: 31.9 °C
Absolute minimum temperature: -19.8 °C
Number of sunny days: 150 days
Number of rainy days: 187 days
Number of snow days: 28 days
Look at detailed online map of Sanilac County
* Weather data for Sanilac County 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) | 8.6 | 12.3 | 13.0 | 26.4 | 29.2 | 30.4 | 31.6 | 29.9 | 31.9 | 28.2 | 15.5 | 15.0 |
| Average daytime temperature (°C) | 2.1 | 3.9 | 4.6 | 14.5 | 18.7 | 23.7 | 26.3 | 23.7 | 22.0 | 15.5 | 7.6 | 5.8 |
| Average temperature (°C) | -0.8 | -1.7 | 0.2 | 8.4 | 12.2 | 17.9 | 21.1 | 19.0 | 17.5 | 11.8 | 3.4 | 2.7 |
| Average night temperature (°C) | -3.2 | -5.7 | -3.2 | 3.4 | 7.0 | 13.1 | 16.9 | 15.1 | 13.8 | 8.8 | -0.1 | 0.6 |
| Absolute minimum temperature (°C) | -18.7 | -19.8 | -10.4 | -4.8 | 0.2 | 9.1 | 13.1 | 9.1 | 7.5 | -3.6 | -7.7 | -5.7 |
| 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 | 14.7 | 15.4 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 9.0 |
| 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 | 8.0 |
| Sunshine mean duration (h) | 2.5 | 6.3 | 6.1 | 8.0 | 11.2 | 11.8 | 11.7 | 10.0 | 8.5 | 5.4 | 5.6 | 3.1 |
| Precipitation (mm) | 68 | 90 | 101 | 140 | 35 | 68 | 165 | 96 | 37 | 82 | 57 | 68 |
| Sunny days | 9 | 12 | 8 | 11 | 22 | 18 | 6 | 10 | 13 | 8 | 19 | 14 |
| Rainy days | 12 | 10 | 16 | 19 | 9 | 12 | 25 | 21 | 17 | 22 | 8 | 16 |
| Snow days | 10 | 6 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 1 |
The best time to visit Sanilac County during the most sunny months:
Months with the longest average daylight duration in Sanilac County:
The largest precipitation sum in Sanilac County is at