Lost Lake Weather Forecast

    • 49
    • 71

    Mostly Sunny

    • 54
    • 80

    Partly Sunny

    • 57
    • 88

    Mostly Sunny

    • 54
    • 82

    Mostly Cloudy

    • 52
    • 72

    Chance Rain

    • 51
    • 70

    Chance Rain

Today 31 May Island County

Sunny. Highs in the 60s. West wind 10 to 15 Mph with Gusts to 25 Mph becoming northwest in the afternoon.

Tonight 31 May Island County

Mostly clear. Lows in the mid 40s to lower 50s. West wind 10 to 15 Mph becoming northwest after midnight.

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Lost Lake Temperature Statistics

May Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 18 May, 2026

    42.1 °F

  • Average May

    56.9 °F

  • Highest 12 May, 2026

    84 °F

Climate (2021–Present)

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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