Lost Lake Weather Forecast

    • 50
    • 70

    Decreasing Clouds

    • 50
    • 72

    Partly Sunny

    • 52
    • 78

    Partly Sunny

    • 53
    • 79

    Partly Sunny

    • 52
    • 77

    Mostly Cloudy

    • 51
    • 71

    Mostly Cloudy

    • 49
    • 64

    Chance Rain

Today 19 May Island County

Mostly cloudy. Highs in the 60s. South wind to 10 Mph.

Tonight 19 May Island County

Mostly cloudy. Lows near 50. West wind 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lost Lake Temperature Statistics

May Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 16 May, 2026

    42.8 °F

  • Average May

    56.7 °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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