Lost Lake Weather Forecast

    • 47
    • 68

    Mostly Sunny

    • 49
    • 69

    Partly Sunny

    • 50
    • 67

    Mostly Cloudy

    • 53
    • 70

    Partly Sunny

    • 53
    • 75

    Mostly Sunny

    • 52
    • 74

    Mostly Sunny

    • 51
    • 71

    Partly Sunny

Today 29 Apr Island County

Sunny. Highs in the upper 50s to mid 60s. Light wind becoming northwest around 10 Mph in the afternoon.

Tonight 29 Apr Island County

Mostly clear. Lows in the 40s. Northwest wind to 10 Mph in the evening becoming light.

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Lost Lake Temperature Statistics

April Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 8 April, 2026

    30 °F

  • Average April

    49 °F

  • Highest 19 April, 2026

    73 °F

Climate (2021–Present)

Arlington Municipal Airport (14.9 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.9 °F
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