Lost Lake Weather Forecast

    • 52
    • 71

    Increasing Clouds

    • 52
    • 66

    Mostly Cloudy

    • 50
    • 65

    Mostly Cloudy

    • 51
    • 67

    Partly Sunny

    • 52
    • 66

    Mostly Cloudy

    • 50
    • 62

    Chance Rain

    • 47
    • 59

    Partly Sunny

Today 4 Oct Island County

Mostly sunny. Highs in the upper 50s.

Tonight 4 Oct Island County

Partly cloudy. Lows near 50. Light wind becoming west to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lost Lake Temperature Statistics

October Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 1 October, 2026

    48.9 °F

  • Average October

    58.4 °F

  • Highest 2 October, 2026

    71.1 °F

Climate (2021–2026)

Arlington Municipal Airport (14.9 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.9 °F
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