Grass Lake Weather Forecast

    • 45
    • 69

    Chance Rain Showers

    • 47
    • 71

    Mostly Sunny

    • 49
    • 75

    Partly Sunny

    • 52
    • 78

    Mostly Sunny

    • 56
    • 79

    Partly Sunny

    • 57
    • 79

    Chance Rain Showers

Today 31 May Southwestern St. Lawrence

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms this afternoon. Highs in the mid 60s. Southwest Winds around 10 Mph, becoming northwest with Gusts up to 25 Mph this afternoon. Chance of rain 50 percent.

Tonight 31 May Southwestern St. Lawrence

Partly cloudy. A chance of Showers with a slight chance of Thunderstorms until midnight. Lows in the mid 40s. Light and variable Winds. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Lake Temperature Statistics

May Temperature

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

  • Lowest 11 May, 2026

    34.3 °F

  • Average May

    54.7 °F

  • Highest 18 May, 2026

    88.9 °F

Climate (2021–Present)

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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