Hart Lake Weather Forecast

    • 44
    • 63

    Decreasing Clouds

    • 43
    • 63

    Mostly Sunny

    • 47
    • 59

    Rain Showers

    • 43
    • 63

    Partly Sunny

    • 46
    • 66

    Partly Sunny

    • 49
    • 70

    Mostly Sunny

Today 12 Sep Mahnomen

Partly sunny. Highs in the mid 60s. Northwest Winds 10 to 20 Mph.

Tonight 12 Sep Mahnomen

Mostly cloudy. Lows in the mid 40s. Northwest Winds around 5 Mph in the evening becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hart Lake Temperature Statistics

September Temperature

Mahnomen County Airport (10.6 miles)

  • Lowest 10 September, 2026

    49.3 °F

  • Average September

    68 °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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