Grass Lake Weather Forecast

    • 41
    • 67

    Increasing Clouds

    • 45
    • 63

    Partly Sunny

    • 45
    • 65

    Chance Rain Showers

    • 44
    • 61

    Mostly Cloudy

    • 43
    • 61

    Partly Sunny

    • 45
    • 64

    Chance Rain Showers

Today 18 Sep Southwestern St. Lawrence

Patchy dense fog this morning. Mostly sunny. Highs in the mid 60s. North Winds around 10 Mph.

Tonight 18 Sep Southwestern St. Lawrence

Partly cloudy. Lows around 40. North 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 11 September, 2026

    48.2 °F

  • Average September

    66.1 °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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