Lost Lake Weather Forecast

    • 56
    • 79

    Decreasing Clouds

    • 57
    • 83

    Partly Sunny

    • 56
    • 82

    Partly Sunny

    • 57
    • 77

    Partly Sunny

    • 57
    • 78

    Mostly Cloudy

    • 58
    • 78

    Mostly Cloudy

Today 12 Aug Island County

Mostly sunny. Highs in the upper 60s to mid 70s. West wind to 10 Mph.

Tonight 12 Aug Island County

Mostly clear. Lows in the 50s. Light wind.

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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

    64.4 °F

  • Highest 6 August, 2026

    84.9 °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

    59.9 °F
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