Lake of the Isles Weather Forecast

    • 44
    • 58

    Rain

    • 34
    • 49

    Chance Rain Showers

    • 32
    • 48

    Chance Rain Showers

    • 33
    • 47

    Slight Chance Rain Showers

    • 37
    • 48

    Chance Rain Showers

    • 38
    • 51

    Chance Rain Showers

Today 29 Apr Jefferson

Rain in the afternoon. Highs Ranging from the mid 50s along the lake Ontario shore to around 60 inland. Light Winds. Chance of rain near 100 percent.

Tonight 29 Apr Jefferson

Cloudy, mild with Lows Ranging from the upper 40s along the lake Ontario shore to the lower 50s across the tug hill. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake of the Isles Temperature Statistics

April Temperature

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

  • Lowest 8 April, 2026

    17.2 °F

  • Average April

    46.3 °F

  • Highest 18 April, 2026

    77.9 °F

Climate (2021–Present)

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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