Lake of the Isles Weather Forecast

    • 50
    • 58

    Rain Showers

    • 50
    • 62

    Rain Showers

    • 48
    • 60

    Chance Rain Showers

    • 43
    • 69

    Rain Showers Likely

    • 30
    • 51

    Chance Rain Showers

    • 27
    • 41

    Partly Sunny

Today 15 Apr Jefferson

Showers with a chance of Thunderstorms in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Warm with Highs Ranging from around 60 along the lake Ontario shore to the mid 60s inland. Light Winds, becoming west 5 to 10 Mph. Chance of rain 90 percent.

Tonight 15 Apr Jefferson

Mostly cloudy with Areas of fog. Near steady Temperatures Ranging from the mid 40s along the lake Ontario shore to the upper 40s across the tug hill. Light Winds.

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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

    41.3 °F

  • Highest 3 April, 2026

    73.4 °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

    47.7 °F

  • Average High 2021–2026

    55.9 °F
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