Lost Lake Weather Forecast

    • 55
    • 67

    Rain

    • 51
    • 62

    Rain

    • 51
    • 63

    Partly Sunny

    • 52
    • 64

    Mostly Cloudy

    • 52
    • 64

    Partly Sunny

    • 52
    • 63

    Partly Sunny

Today 28 Sep Island County

Mostly sunny. Highs in the 60s. South wind to 10 Mph.

Tonight 28 Sep Island County

Windy. Cloudy in the Evening, then a slight chance of rain after midnight. Cloudy with rain likely in the morning. Rainfall Amounts less than a tenth of an inch likely. Lows in the lower to mid 50s. Southeast wind 10 to 20 Mph with Gusts to 30 Mph increasing to 15 to 30 Mph with Gusts to 40 Mph after midnight.

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Lost Lake Temperature Statistics

September Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 24 September, 2026

    43 °F

  • Average September

    58.5 °F

  • Highest 9 September, 2026

    78.1 °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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