Hermantown Weather Forecast

    • 42
    • 55

    Rain Showers

    • 42
    • 60

    Rain Showers Likely

    • 49
    • 74

    Slight Chance Thunderstorms

    • 53
    • 79

    Mostly Sunny

    • 51
    • 81

    Partly Sunny

    • 47
    • 70

    Mostly Sunny

    • 48
    • 72

    Mostly Sunny

Today 22 May Carlton/South St. Louis

Cloudy with a 40 percent chance of Showers. Near steady temperature in the lower 50s. East Winds 10 to 15 Mph with Gusts up to 35 Mph.

Tonight 22 May Carlton/South St. Louis

Showers. Lows in the lower 40s. East Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hermantown Temperature Statistics

May Temperature

Duluth International Airport (3.1 miles)

  • Lowest 1 May, 2026

    23.6 °F

  • Average May

    46.4 °F

  • Highest 15 May, 2026

    81.6 °F

Climate (2021–Present)

Duluth International Airport (3.1 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    42.2 °F

  • Average High 2021–2026

    51 °F
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