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St. Clair, MI Climate
1991 to 2020 normals at Port Huron, 11 mi from the center of St. Clair, elevation 590 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 31° | 20° | 2.48 in | 11.1 in | |
| February | 33° | 21° | 2.06 in | 11.4 in | |
| March | 42° | 28° | 2.21 in | 4.6 in | |
| April | 54° | 38° | 3.15 in | 0.4 in | |
| May | 67° | 49° | 3.53 in | 0.0 in | |
| June | 76° | 59° | 3.62 in | 0.0 in | |
| July | 81° | 65° | 3.25 in | 0.0 in | |
| August | 80° | 64° | 3.14 in | 0.0 in | |
| September | 73° | 57° | 3.32 in | 0.0 in | |
| October | 61° | 46° | 3.13 in | 0.0 in | |
| November | 47° | 35° | 2.81 in | 1.3 in | |
| December | 36° | 26° | 2.17 in | 6.7 in | |
| Year | 57° | 34.87 in | 35.5 in |
Frequently asked questions
- What is the hottest month in St. Clair, MI?
- July is the warmest month, with a normal high of 81°F at Port Huron.
- What is the coldest month in St. Clair, MI?
- January is the coldest month, with a normal low of 20°F.
- What is the wettest month in St. Clair, MI?
- June has the most precipitation on average, about 3.62 inches.