Grass Lake Weather Forecast

    • 42
    • 67

    Sunny

    • 47
    • 70

    Mostly Sunny

    • 48
    • 69

    Mostly Cloudy

    • 48
    • 67

    Slight Chance Rain Showers

    • 45
    • 65

    Partly Sunny

    • 49
    • 69

    Mostly Sunny

Today 24 Sep Southwestern St. Lawrence

Partly cloudy. A 30 percent chance of Showers. Lows in the upper 50s. Highs in the lower 70s.

Tonight 24 Sep Southwestern St. Lawrence

Clear. Lows around 40. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Lake Temperature Statistics

September Temperature

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

  • Lowest 22 September, 2026

    38.3 °F

  • Average September

    63.3 °F

  • Highest 2 September, 2026

    82.2 °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

    47.7 °F

  • Average High 2021–2026

    55.9 °F
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