Lost Lake Weather Forecast

    • 54
    • 75

    Partly Sunny

    • 55
    • 73

    Chance Rain

    • 54
    • 73

    Slight Chance Rain

    • 54
    • 74

    Partly Sunny

    • 54
    • 72

    Partly Sunny

    • 54
    • 73

    Partly Sunny

Today 10 Sep Island County

Partly sunny. Highs in the mid 60s to lower 70s. West wind 10 to 20 Mph becoming northwest to 10 Mph in the afternoon.

Tonight 10 Sep Island County

Partly cloudy. Lows in the lower to mid 50s. West wind to 10 Mph.

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Lost Lake Temperature Statistics

September Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 6 September, 2026

    46.9 °F

  • Average September

    60.2 °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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