Grass Lake Weather Forecast

    • 47
    • 69

    Mostly Sunny

    • 51
    • 69

    Mostly Cloudy

    • 51
    • 67

    Slight Chance Rain Showers

    • 52
    • 65

    Partly Sunny

    • 52
    • 66

    Mostly Sunny

    • 56
    • 72

    Mostly Cloudy

Today 25 Sep Southwestern St. Lawrence

Partly cloudy. A 40 percent chance of Showers. Lows in the lower 50s. Highs around 70.

Tonight 25 Sep Southwestern St. Lawrence

Clear. Lows in the upper 40s. Northeast Winds around 10 Mph until Midnight, becoming light and variable.

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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 22 September, 2026

    38.3 °F

  • Average September

    63 °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

    47.7 °F

  • Average High 2021–2026

    55.9 °F
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