Lost Lake Weather Forecast

    • 44
    • 58

    Rain Showers

    • 47
    • 62

    Rain Likely

    • 48
    • 68

    Mostly Cloudy

    • 49
    • 69

    Mostly Cloudy

    • 50
    • 67

    Partly Sunny

    • 51
    • 67

    Mostly Cloudy

    • 52
    • 69

    Partly Sunny

Today 15 May Island County

Breezy. A chance of Showers in the Morning, then Showers likely in the afternoon. A slight chance of Thunderstorms in the afternoon. Rainfall Amounts a tenth to a quarter of an inch Possible, except higher Amounts possible in Thunderstorms. Highs in the 50s. South wind 15 to 25 Mph. Gusts to 35 Mph in the afternoon.

Tonight 15 May Island County

Showers likely and a slight chance of Thunderstorms in the Evening, then rain at Times late in the evening. Rain likely after midnight. Rainfall Amounts a tenth to a quarter of an inch Possible, except higher Amounts possible in Thunderstorms. Lows in the lower to mid 40s. Southeast wind 10 to 15 Mph becoming south after midnight.

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Lost Lake Temperature Statistics

May Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 12 May, 2026

    44.6 °F

  • Average May

    58.6 °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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