Lake of the Isles Weather Forecast

    • 44
    • 62

    Mostly Sunny

    • 44
    • 66

    Mostly Sunny

    • 45
    • 66

    Mostly Sunny

    • 46
    • 66

    Partly Sunny

    • 47
    • 67

    Partly Sunny

    • 49
    • 68

    Partly Sunny

Today 22 Sep Jefferson

Sunny. Highs in the lower 60s. Northeast Winds 5 to 10 Mph, increasing to 10 to 15 Mph.

Tonight 22 Sep Jefferson

Becoming mainly clear. Lows Ranging from the lower 40s across the tug hill to the upper 40s along the lake Ontario shore. Northeast Winds 10 to 15 Mph, becoming light.

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  • Temperature Forecast NOAA

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Lake of the Isles Temperature Statistics

September Temperature

Fort Drum / Wheeler-Sack U. S. Army Airfield (23 miles)

  • Lowest 19 September, 2026

    41.2 °F

  • Average September

    65.1 °F

  • Highest 2 September, 2026

    82.2 °F

Climate (2021–2026)

Fort Drum / Wheeler-Sack U. S. Army Airfield (23 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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