Grass Lake Weather Forecast

    • 54
    • 70

    Rain Showers Likely

    • 54
    • 74

    Chance Thunderstorms

    • 56
    • 73

    Chance Rain Showers

    • 56
    • 76

    Slight Chance Rain Showers

    • 58
    • 78

    Chance Rain Showers

    • 58
    • 78

    Rain Showers Likely

Today 20 Jun Southwestern St. Lawrence

Mostly cloudy. Scattered Showers with isolated Thunderstorms this Morning, then numerous Showers and Thunderstorms this afternoon. Highs in the upper 60s. West Winds around 10 Mph. Chance of rain 70 percent.

Tonight 20 Jun Southwestern St. Lawrence

Mostly cloudy. Showers likely with numerous Thunderstorms until Midnight, then a chance of Showers after midnight. Lows in the mid 50s. 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

June Temperature

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

  • Lowest 1 June, 2026

    41.5 °F

  • Average June

    67.3 °F

  • Highest 11 June, 2026

    85.1 °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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