Lost Lake Weather Forecast

    • 58
    • 84

    Mostly Sunny

    • 57
    • 83

    Partly Sunny

    • 57
    • 80

    Partly Sunny

    • 57
    • 77

    Mostly Cloudy

    • 58
    • 78

    Mostly Cloudy

    • 58
    • 76

    Mostly Cloudy

Today 13 Aug Island County

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

Tonight 13 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

    64.1 °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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