Barnum Weather Forecast

    • 54
    • 64

    Chance Thunderstorms

    • 54
    • 61

    Rain Showers Likely

    • 55
    • 67

    Rain Showers Likely

    • 56
    • 70

    Chance Rain Showers

    • 53
    • 73

    Slight Chance Rain Showers

    • 51
    • 68

    Mostly Cloudy

Today 18 Sep Carlton/South St. Louis

Cloudy with a slight chance of Showers. A slight chance of Thunderstorms this afternoon. Much cooler. Near steady temperature around 60. East Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 18 Sep Carlton/South St. Louis

Cloudy with a chance of Showers with a slight chance of Thunderstorms. Lows in the lower 50s. East Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 40 percent.

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Barnum Temperature Statistics

September Temperature

Moose Lake Carlton County Airport (8.1 miles)

  • Lowest 8 September, 2025

    35.6 °F

  • Average September

    58.8 °F

  • Highest 16 September, 2025

    87.8 °F

Climate (2020–Present)

Moose Lake Carlton County Airport (8.1 miles)

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  • Average Low 2020–2025

    32.7 °F

  • Average 2020–2025

    43.2 °F

  • Average High 2020–2025

    53.6 °F
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