Lost Lake Weather Forecast

    • 57
    • 83

    Increasing Clouds

    • 56
    • 80

    Partly Sunny

    • 56
    • 79

    Partly Sunny

    • 57
    • 78

    Mostly Cloudy

    • 57
    • 77

    Mostly Cloudy

    • 56
    • 75

    Partly Sunny

Today 14 Aug Island County

Mostly sunny. Highs in the 70s. Southwest wind to 10 Mph becoming west in the afternoon.

Tonight 14 Aug Island County

Partly cloudy. Lows in the 50s. West wind 10 to 15 Mph decreasing to 10 Mph or less after midnight.

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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

    42.5 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.8 °F
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