Lost Lake Weather Forecast

    • 46
    • 64

    Increasing Clouds

    • 44
    • 59

    Mostly Cloudy

    • 42
    • 57

    Partly Sunny

    • 44
    • 57

    Chance Rain

    • 43
    • 59

    Slight Chance Rain

    • 43
    • 59

    Partly Sunny

Today 21 Oct Island County

Sunny. Patchy fog in the morning. Highs in the mid 50s to lower 60s. Light wind.

Tonight 21 Oct Island County

Mostly cloudy. Lows in the 40s. Northwest wind 10 to 15 Mph becoming west after midnight.

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Lost Lake Temperature Statistics

October Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 12 October, 2026

    32 °F

  • Average October

    53.3 °F

  • Highest 16 October, 2026

    78.1 °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

    60 °F
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