Grass Lake Weather Forecast

    • 43
    • 66

    Mostly Sunny

    • 60
    • 71

    Chance Rain Showers

    • 57
    • 76

    Mostly Cloudy

    • 55
    • 72

    Chance Rain Showers

    • 51
    • 71

    Chance Rain Showers

    • 51
    • 67

    Chance Rain Showers

Today 14 Sep Southwestern St. Lawrence

Mostly sunny. Highs in the mid 60s. Northwest Winds around 10 Mph.

Tonight 14 Sep Southwestern St. Lawrence

Clear. Lows in the lower 40s. 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 11 September, 2026

    48.2 °F

  • Average September

    66.9 °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

    47.8 °F

  • Average High 2021–2026

    55.9 °F
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