Lost Lake Weather Forecast

    • 57
    • 79

    Partly Sunny

    • 56
    • 79

    Mostly Cloudy

    • 57
    • 81

    Mostly Cloudy

    • 56
    • 78

    Mostly Cloudy

    • 57
    • 76

    Mostly Cloudy

    • 57
    • 77

    Partly Sunny

Today 15 Aug Island County

Mostly cloudy in the morning then becoming mostly sunny. Highs in the upper 60s to mid 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 15 Aug Island County

Partly cloudy in the evening then becoming mostly cloudy. Lows in the 50s. West wind to 10 Mph.

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  • Temperature Real-Time

Lost Lake Temperature Statistics

August Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 3 August, 2026

    46.4 °F

  • Average August

    64.2 °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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