Grass Lake Weather Forecast

    • 61
    • 78

    Decreasing Clouds

    • 55
    • 76

    Partly Sunny

    • 51
    • 71

    Partly Sunny

    • 52
    • 72

    Mostly Sunny

    • 54
    • 74

    Slight Chance Rain Showers

    • 56
    • 70

    Chance Rain Showers

Today 3 Sep Southwestern St. Lawrence

Partly sunny with a 20 percent chance of Showers. Highs in the upper 70s. Light and variable Winds, becoming west around 10 Mph this afternoon.

Tonight 3 Sep Southwestern St. Lawrence

Partly cloudy. Lows in the upper 50s. Light and variable Winds.

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Grass Lake Temperature Statistics

September Temperature

Fort Drum / Wheeler-Sack U. S. Army Airfield (19.9 miles)

  • Lowest 1 September, 2026

    64.6 °F

  • Average September

    70.3 °F

  • Highest 1 September, 2026

    77.9 °F

Climate (2021–2026)

Fort Drum / Wheeler-Sack U. S. Army Airfield (19.9 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    55.9 °F
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