Lost Lake Weather Forecast

    • 56
    • 80

    Mostly Sunny

    • 59
    • 88

    Mostly Sunny

    • 60
    • 90

    Mostly Sunny

    • 60
    • 90

    Mostly Sunny

    • 58
    • 82

    Mostly Sunny

    • 58
    • 76

    Partly Sunny

    • 58
    • 77

    Mostly Sunny

Today 3 Aug Island County

Sunny. Highs in the upper 60s to mid 70s. Northwest wind to 10 Mph increasing to 10 to 15 Mph in the afternoon.

Tonight 3 Aug Island County

Mostly clear. Lows in the 50s. Northwest 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 1 August, 2026

    57 °F

  • Average August

    60.7 °F

  • Highest 1 August, 2026

    64 °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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