Grass Lake Weather Forecast

    • 57
    • 85

    Mostly Sunny

    • 57
    • 84

    Partly Sunny

    • 58
    • 81

    Slight Chance Rain Showers

    • 61
    • 82

    Chance Rain Showers

    • 60
    • 79

    Chance Thunderstorms

    • 56
    • 76

    Chance Rain Showers

Today 18 Sep Van Buren

Sunny. Highs in the upper 70s near lake Michigan in the mid 80s inland. Light Winds becoming northwest 5 to 10 Mph in the afternoon.

Tonight 18 Sep Van Buren

Mostly clear. Lows in the mid 50s. North Winds around 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Lake Temperature Statistics

September Temperature

Haines Memorial Airport (15.5 miles)

  • Lowest 8 September, 2025

    39.2 °F

  • Average September

    61.2 °F

  • Highest 15 September, 2025

    86 °F

Climate (2020–Present)

Haines Memorial Airport (15.5 miles)

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  • Average Low 2020–2025

    42.2 °F

  • Average 2020–2025

    51.2 °F

  • Average High 2020–2025

    60.3 °F
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