Grass Lake Weather Forecast

    • 56
    • 74

    Rain Showers

    • 52
    • 75

    Mostly Sunny

    • 57
    • 75

    Mostly Sunny

    • 60
    • 81

    Rain Showers Likely

    • 56
    • 74

    Rain Showers

    • 56
    • 72

    Chance Rain Showers

Today 19 Aug Southwestern St. Lawrence

Showers. A slight chance of Thunderstorms this Morning, then a chance of Thunderstorms this afternoon. Highs in the mid 70s. Southwest Winds around 10 Mph. Chance of rain near 100 percent.

Tonight 19 Aug Southwestern St. Lawrence

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Lake Temperature Statistics

August Temperature

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

  • Lowest 16 August, 2026

    54.1 °F

  • Average August

    71.4 °F

  • Highest 5 August, 2026

    86.7 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    55.9 °F
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