Grass Lake Weather Forecast

    • 45
    • 62

    Rain Showers

    • 41
    • 58

    Mostly Cloudy

    • 42
    • 61

    Partly Sunny

    • 43
    • 66

    Partly Sunny

    • 43
    • 66

    Mostly Cloudy

    • 45
    • 66

    Slight Chance Rain Showers

Today 20 Sep Southwestern St. Lawrence

Mostly cloudy with a 50 percent chance of rain. Highs in the lower 60s. Light and variable Winds.

Tonight 20 Sep Southwestern St. Lawrence

Partly cloudy. Patchy dense fog after midnight. Lows in the mid 40s. Light and variable Winds, becoming north around 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Lake Temperature Statistics

September Temperature

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

  • Lowest 11 September, 2026

    48.2 °F

  • Average September

    65.8 °F

  • Highest 2 September, 2026

    82.2 °F

Climate (2021–2026)

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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