Lost Lake Weather Forecast

    • 58
    • 86

    Increasing Clouds

    • 56
    • 82

    Partly Sunny

    • 56
    • 78

    Partly Sunny

    • 57
    • 79

    Mostly Sunny

    • 58
    • 76

    Partly Sunny

    • 58
    • 77

    Partly Sunny

    • 59
    • 79

    Partly Sunny

Today 7 Aug Island County

Sunny. Highs in the 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 7 Aug Island County

Mostly clear in the evening then becoming mostly cloudy. Lows in the mid to upper 50s. West wind to 10 Mph.

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Lost Lake Temperature Statistics

August Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 3 August, 2026

    46.4 °F

  • Average August

    62.7 °F

  • Highest 5 August, 2026

    84 °F

Climate (2021–2026)

Arlington Municipal Airport (14.9 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.8 °F
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