Lost Lake Weather Forecast

    • 51
    • 75

    Mostly Cloudy

    • 50
    • 72

    Mostly Cloudy

    • 50
    • 75

    Partly Sunny

    • 54
    • 80

    Mostly Cloudy

    • 53
    • 77

    Slight Chance Rain

    • 50
    • 72

    Chance Rain

    • 49
    • 66

    Chance Rain

Today 9 May Island County

Mostly sunny. Highs in the mid 60s to lower 70s. Light wind becoming northwest to 10 Mph in the afternoon.

Tonight 9 May Island County

Mostly cloudy. Lows near 50. Northwest wind to 10 Mph becoming west after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lost Lake Temperature Statistics

May Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 1 May, 2026

    46 °F

  • Average May

    59.7 °F

  • Highest 4 May, 2026

    79 °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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