Fort Gratiot County Park Weather Forecast

    • 50
    • 61

    Chance Thunderstorms

    • 35
    • 63

    Rain Showers

    • 28
    • 43

    Slight Chance Rain/Snow

    • 35
    • 43

    Partly Sunny

    • 42
    • 62

    Partly Sunny

    • 41
    • 55

    Mostly Sunny

Today 17 Apr St. Clair

Partly cloudy. Highs in the upper 60s. East Winds up to 5 Mph, becoming south in the afternoon.

Tonight 17 Apr St. Clair

Partly cloudy in the Evening, then mostly cloudy with Showers likely and a chance of Thunderstorms after midnight. Lows around 50. Southeast Winds 5 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fort Gratiot County Park Temperature Statistics

April Temperature

St Clair County International Airport (11.8 miles)

  • Lowest 7 April, 2026

    23 °F

  • Average April

    45.1 °F

  • Highest 13 April, 2026

    80.6 °F

Climate (2021–Present)

St Clair County International Airport (11.8 miles)

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  • Average Low 2021–2026

    39.7 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    58.7 °F
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