Hart Lake Weather Forecast

    • 47
    • 69

    Slight Chance Rain Showers

    • 62
    • 78

    Mostly Sunny

    • 47
    • 79

    Chance Thunderstorms

    • 43
    • 65

    Mostly Cloudy

    • 46
    • 61

    Rain Showers Likely

    • 44
    • 62

    Rain Showers Likely

Today 9 Sep Mahnomen

Mostly sunny. A chance of Showers and a slight chance of Thunderstorms this morning. Highs 70 to 75. Northwest Winds 10 to 20 Mph. Chance of rain 40 percent.

Tonight 9 Sep Mahnomen

Mostly clear. Lows in the mid 40s. Southwest Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hart Lake Temperature Statistics

September Temperature

Mahnomen County Airport (10.6 miles)

  • Lowest 2 September, 2026

    50.7 °F

  • Average September

    68.9 °F

  • Highest 3 September, 2026

    85.5 °F

Climate (2021–2026)

Mahnomen County Airport (10.6 miles)

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  • Average Low 2021–2026

    32.2 °F

  • Average 2021–2026

    41.8 °F

  • Average High 2021–2026

    51.1 °F
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