Grass Lake Weather Forecast

    • 25
    • 37

    Chance Rain/Snow

    • 12
    • 30

    Chance Snow Showers

    • 23
    • 29

    Rain/Snow

    • 17
    • 35

    Rain/Snow Likely

    • 19
    • 27

    Chance Snow Showers

    • 26
    • 34

    Rain Showers Likely

    • 16
    • 37

    Chance Rain/Snow

Today 20 Dec Southwestern St. Lawrence

Mostly cloudy. Highs in the lower 30s. South Winds around 10 Mph with Gusts up to 30 Mph.

Tonight 20 Dec Southwestern St. Lawrence

Cloudy with a 50 percent chance of snow Showers. Little or no snow accumulation. Lows in the upper 20s. Southwest Winds 15 to 20 Mph with Gusts up to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Lake Temperature Statistics

December Temperature

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

  • Lowest 5 December, 2025

    -2.6 °F

  • Average December

    21.9 °F

  • Highest 18 December, 2025

    46 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    56.1 °F
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