Hart Lake Weather Forecast

    • 38
    • 62

    Becoming Sunny

    • 41
    • 63

    Mostly Sunny

    • 47
    • 65

    Rain Showers Likely

    • 50
    • 64

    Mostly Cloudy

    • 53
    • 68

    Chance Rain Showers

    • 50
    • 64

    Chance Rain Showers

Today 21 Sep Mahnomen

Sunny. Highs in the mid 60s. East Winds around 5 Mph.

Tonight 21 Sep Mahnomen

Mostly clear. Lows 35 to 40. Southeast Winds up to 10 Mph.

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  • Temperature Real-Time

Hart Lake Temperature Statistics

September Temperature

Mahnomen County Airport (10.6 miles)

  • Lowest 13 September, 2026

    37 °F

  • Average September

    62.8 °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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