Fort Gratiot Charter Township Weather Forecast
- 42
- 68
Chance Thunderstorms
- 50
- 64
Chance Thunderstorms
- 34
- 64
Rain Showers
- 28
- 45
Slight Chance Rain/Snow
- 34
- 44
Partly Sunny
- 42
- 64
Partly Sunny
- 40
- 57
Mostly Sunny
Today 16 Apr St. Clair
Showers and a chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall. Highs in the lower 70s. Temperatures falling into the in the lower 60s in the afternoon. Southwest Winds 5 to 15 Mph, becoming northwest 5 to 10 Mph in the late afternoon. Chance of rain 90 percent.
Tonight 16 Apr St. Clair
Mostly Cloudy, then becoming partly Cloudy, then becoming mostly cloudy. A chance of Showers in the evening. Lows in the mid 40s. North Winds up to 10 Mph. Chance of rain 30 percent.
Fort Gratiot Charter Township Temperature Statistics
April Temperature
St Clair County International Airport (9.3 miles)
Lowest 7 April, 2026
23 °FAverage April
45.1 °FHighest 13 April, 2026
80.6 °F
Climate (2021–Present)
St Clair County International Airport (9.3 miles)
Average Low 2021–2026
39.7 °FAverage 2021–2026
49.4 °FAverage High 2021–2026
58.7 °F