Lost Lake Weather Forecast

    • 54
    • 73

    Mostly Cloudy

    • 55
    • 75

    Mostly Sunny

    • 56
    • 78

    Partly Sunny

    • 55
    • 76

    Mostly Cloudy

    • 53
    • 72

    Partly Sunny

    • 53
    • 73

    Partly Sunny

Today 7 Sep Island County

Mostly cloudy. A slight chance of rain in the morning. A chance of rain late in the Morning, then a slight chance of rain early in the afternoon. Highs in the mid 60s to lower 70s. South wind to 10 Mph.

Tonight 7 Sep Island County

Partly cloudy. Lows in the lower to mid 50s. Light wind.

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Lost Lake Temperature Statistics

September Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 1 September, 2026

    51.1 °F

  • Average September

    60.6 °F

  • Highest 4 September, 2026

    73 °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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