Grass Lake Weather Forecast

    • 61
    • 75

    Mostly Cloudy

    • 64
    • 75

    Rain Showers

    • 51
    • 74

    Partly Sunny

    • 50
    • 70

    Mostly Sunny

    • 64
    • 77

    Partly Sunny

    • 57
    • 77

    Chance Rain Showers

    • 54
    • 71

    Chance Rain Showers

Today 8 Sep Southwestern St. Lawrence

Partly sunny with isolated Showers this Morning, then mostly cloudy this afternoon. Highs in the mid 70s. Light and variable Winds. Chance of rain 20 percent.

Tonight 8 Sep Southwestern St. Lawrence

Partly cloudy until Midnight, then becoming mostly cloudy. Lows around 60. 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 6 September, 2026

    54.3 °F

  • Average September

    68.3 °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

    47.8 °F

  • Average High 2021–2026

    55.9 °F
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