Grass Lake Weather Forecast

    • 60
    • 82

    Rain Showers Likely

    • 58
    • 79

    Partly Sunny

    • 58
    • 78

    Rain Showers Likely

    • 54
    • 77

    Chance Thunderstorms

    • 51
    • 72

    Mostly Sunny

    • 53
    • 74

    Partly Sunny

    • 56
    • 75

    Mostly Cloudy

Today 10 Aug Southwestern St. Lawrence

Partly sunny this Morning, then mostly cloudy with a chance of Showers and Thunderstorms this afternoon. Highs in the upper 70s. Light and variable Winds, becoming southwest around 10 Mph this afternoon. Chance of rain 50 percent.

Tonight 10 Aug Southwestern St. Lawrence

Partly cloudy. Showers likely with a chance of Thunderstorms until Midnight, then a slight chance of Showers and Thunderstorms after midnight. Lows around 60. Southwest Winds around 10 Mph until Midnight, becoming light and variable. Chance of rain 70 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 5 August, 2026

    60.1 °F

  • Average August

    73.8 °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

    56 °F
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