Hart Lake Weather Forecast

    • 55
    • 64

    Rain Showers Likely

    • 56
    • 62

    Rain Showers

    • 54
    • 66

    Chance Rain Showers

    • 55
    • 72

    Slight Chance Rain Showers

    • 53
    • 74

    Partly Sunny

    • 51
    • 70

    Partly Sunny

Today 18 Sep Mahnomen

Showers likely. A slight chance of Thunderstorms late this Morning, then a chance of Thunderstorms this afternoon. Highs in the mid 60s. East Winds 5 to 15 Mph. Chance of rain 70 percent.

Tonight 18 Sep Mahnomen

Cloudy. A chance of Showers and Thunderstorms in the Evening, then Showers likely and a slight chance of Thunderstorms after midnight. Lows in the mid 50s. East Winds 5 to 15 Mph. Chance of rain 60 percent.

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Hart Lake Temperature Statistics

September Temperature

Mahnomen County Airport (10.6 miles)

  • Lowest 7 September, 2025

    34 °F

  • Average September

    60.2 °F

  • Highest 14 September, 2025

    82.4 °F

Climate (2020–Present)

Mahnomen County Airport (10.6 miles)

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  • Average Low 2020–2025

    32.2 °F

  • Average 2020–2025

    41.9 °F

  • Average High 2020–2025

    51.1 °F
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