Lost Lake Weather Forecast

    • 44
    • 61

    Mostly Sunny

    • 45
    • 63

    Partly Sunny

    • 44
    • 58

    Chance Rain

    • 43
    • 58

    Mostly Cloudy

    • 44
    • 56

    Chance Rain

    • 44
    • 57

    Chance Rain

Today 20 Oct Island County

Sunny. Highs in the mid 50s to lower 60s. Northwest wind 10 to 15 Mph.

Tonight 20 Oct Island County

Mostly clear. Patchy fog in the morning. Lows in the upper 30s to mid 40s. Northwest wind to 10 Mph in the evening becoming light.

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Lost Lake Temperature Statistics

October Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 12 October, 2026

    32 °F

  • Average October

    53.5 °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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