Island Lake Reservoir Weather Forecast

    • 36
    • 58

    Decreasing Clouds

    • 36
    • 62

    Chance Rain Showers

    • 40
    • 66

    Mostly Sunny

    • 42
    • 66

    Partly Sunny

    • 44
    • 65

    Mostly Cloudy

    • 45
    • 67

    Partly Sunny

    • 48
    • 72

    Partly Sunny

Today 23 May Carlton/South St. Louis

Partly sunny. Near steady temperature in the upper 50s. Northeast Winds around 5 Mph.

Tonight 23 May Carlton/South St. Louis

Partly cloudy this Evening, then clearing. Areas of frost after midnight. Lows in the mid 30s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Island Lake Reservoir Temperature Statistics

May Temperature

Duluth International Airport (11.2 miles)

  • Lowest 3 May, 2025

    30.8 °F

  • Average May

    52.7 °F

  • Highest 11 May, 2025

    87.7 °F

Climate (2020–Present)

Duluth International Airport (11.2 miles)

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  • Average Low 2020–2025

    33.7 °F

  • Average 2020–2025

    42.4 °F

  • Average High 2020–2025

    51.2 °F
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