Grass Lake Weather Forecast

    • 55
    • 77

    Becoming Sunny

    • 61
    • 81

    Partly Sunny

    • 54
    • 76

    Rain Showers

    • 52
    • 71

    Rain Showers Likely

    • 54
    • 73

    Slight Chance Rain Showers

    • 58
    • 77

    Mostly Cloudy

Today 21 Aug Southwestern St. Lawrence

Patchy dense fog this morning. Mostly sunny. Highs in the mid 70s. Light and variable Winds.

Tonight 21 Aug Southwestern St. Lawrence

Clear. Lows in the mid 50s. Light and variable Winds.

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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

    71.2 °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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