Hart Lake Weather Forecast

    • 39
    • 58

    Sunny

    • 41
    • 62

    Sunny

    • 42
    • 59

    Mostly Sunny

    • 44
    • 60

    Mostly Sunny

    • 44
    • 62

    Partly Sunny

    • 40
    • 57

    Partly Sunny

Today 16 Sep Western Chelan County

Sunny. Highs in the lower 70s to lower 80s.

Tonight 16 Sep Western Chelan County

Clear. Lows in the mid to upper 40s.

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Hart Lake Temperature Statistics

September Temperature

Arlington Municipal Airport (59.7 miles)

  • Lowest 8 September, 2026

    46 °F

  • Average September

    60.1 °F

  • Highest 9 September, 2026

    78.1 °F

Climate (2021–2026)

Arlington Municipal Airport (59.7 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.9 °F
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