Lost Lake Weather Forecast

    • 57
    • 80

    Increasing Clouds

    • 57
    • 83

    Partly Sunny

    • 56
    • 80

    Partly Sunny

    • 58
    • 82

    Partly Sunny

    • 58
    • 78

    Chance Rain

    • 57
    • 75

    Chance Rain

Today 17 Aug Island County

Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the upper 60s to mid 70s. Light wind.

Tonight 17 Aug Island County

Mostly clear in the evening then becoming mostly cloudy. 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

    64.3 °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

    50.8 °F

  • Average High 2021–2026

    59.8 °F
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