Grand Mere State Park Weather Forecast

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    • 66

    Chance Rain Showers

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    • 61

    Chance Rain Showers

    • 50
    • 62

    Chance Rain Showers

    • 52
    • 64

    Mostly Cloudy

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    • 65

    Chance Rain Showers

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    • 66

    Rain Showers Likely

Today 29 Oct Southern Berrien

Partly cloudy in the Morning, then becoming mostly cloudy. A slight chance of Thunderstorms. A slight chance of Showers in the Morning, then a chance of Showers in the afternoon. Highs in the upper 60s. Southwest Winds around 10 Mph, becoming west in the afternoon. Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 29 Oct Southern Berrien

Mostly clear. A slight chance of Showers in the evening. Cooler with Lows in the lower 40s. Northwest Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Mere State Park Temperature Statistics

October Temperature

Southwest Michigan Regional Airport (10.6 miles)

  • Lowest 17 October, 2026

    31.6 °F

  • Average October

    57.1 °F

  • Highest 12 October, 2026

    86.6 °F

Climate (2021–2026)

Southwest Michigan Regional Airport (10.6 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    60.7 °F
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