Island Lake Reservoir Weather Forecast

    • 27
    • 27

    Wintry Mix

    • -8
    • 33

    Snow Likely

    • 5
    • 15

    Chance Snow

    • -8
    • 18

    Partly Sunny

    • -5
    • 9

    Cold

    • 13
    • 22

    Chance Snow

Today 17 Dec Carlton/South St. Louis

Mostly sunny. Much cooler with Highs in the upper 20s. South Winds 10 to 15 Mph. Gusts up to 30 Mph this afternoon.

Tonight 17 Dec Carlton/South St. Louis

Freezing Rain, snow and rain in the Evening, then rain with possible Snow, freezing drizzle and freezing rain likely after midnight. Little or no snow accumulation. Ice accumulation around a trace. Not as cool with Lows in the upper 20s. South Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of precipitation 80 percent.

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Island Lake Reservoir Temperature Statistics

December Temperature

Duluth International Airport (11.2 miles)

  • Lowest 13 December, 2025

    -16.1 °F

  • Average December

    6.7 °F

  • Highest 9 December, 2025

    24.1 °F

Climate (2020–Present)

Duluth International Airport (11.2 miles)

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  • Average Low 2020–2025

    33.6 °F

  • Average 2020–2025

    42.4 °F

  • Average High 2020–2025

    51.2 °F
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