Lost Lake Weather Forecast

    • 52
    • 67

    Increasing Clouds

    • 53
    • 67

    Rain

    • 49
    • 66

    Rain

    • 50
    • 66

    Mostly Cloudy

    • 50
    • 64

    Mostly Cloudy

    • 52
    • 64

    Chance Rain

    • 52
    • 66

    Chance Rain

Today 23 Sep Island County

Mostly cloudy with a slight chance of rain. Highs in the lower to mid 60s.

Tonight 23 Sep Island County

Mostly cloudy. Lows near 50. West wind 10 to 15 Mph becoming northwest after midnight.

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Lost Lake Temperature Statistics

September Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 16 September, 2026

    44.1 °F

  • Average September

    59.2 °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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