Hart Lake Weather Forecast

    • 58
    • 79

    Mostly Sunny

    • 57
    • 78

    Slight Chance Thunderstorms

    • 53
    • 73

    Chance Rain Showers

    • 51
    • 66

    Chance Rain Showers

    • 47
    • 63

    Chance Rain Showers

    • 47
    • 61

    Slight Chance Rain Showers

Today 25 Aug Western Chelan County

Sunny. Highs 92 to 102.

Tonight 25 Aug Western Chelan County

Partly cloudy. Lows in the mid 60s to mid 70s.

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Hart Lake Temperature Statistics

August Temperature

Arlington Municipal Airport (59.7 miles)

  • Lowest 21 August, 2025

    46 °F

  • Average August

    65.7 °F

  • Highest 12 August, 2025

    93 °F

Climate (2020–Present)

Arlington Municipal Airport (59.7 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    50.6 °F

  • Average High 2020–2025

    59.7 °F
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