Lost Lake Weather Forecast

    • 58
    • 81

    Slight Chance Rain

    • 55
    • 75

    Rain Likely

    • 53
    • 74

    Chance Rain

    • 53
    • 72

    Mostly Cloudy

    • 54
    • 70

    Mostly Cloudy

    • 54
    • 71

    Chance Rain

Today 27 Aug Island County

Cloudy in the morning then becoming mostly sunny. Highs in the upper 60s to mid 70s. South wind 10 to 20 Mph.

Tonight 27 Aug Island County

Partly cloudy in the evening then becoming cloudy. A slight chance of rain after midnight. Lows in the mid to upper 50s. West wind 10 to 15 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lost Lake Temperature Statistics

August Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 3 August, 2026

    46.4 °F

  • Average August

    64.7 °F

  • Highest 25 August, 2026

    89.1 °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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