Lake Ketchum Weather Forecast

    • 49
    • 54

    Rain

    • 43
    • 57

    Rain

    • 40
    • 54

    Slight Chance Rain Showers

    • 44
    • 51

    Rain Likely

    • 47
    • 54

    Rain

    • 48
    • 56

    Rain

Today 31 Oct Lowlands of Western Skagit and Northwestern Snohomish Counties

Windy. Rain likely in the Morning, then rain at Times in the afternoon. Rainfall Amounts a quarter to a half inch possible. Highs in the 50s. Southeast wind 15 to 30 Mph. Gusts to 40 Mph in the afternoon.

Tonight 31 Oct Lowlands of Western Skagit and Northwestern Snohomish Counties

Windy. Rain in the Evening, then rain likely late in the evening. Rain after midnight. Rainfall Amounts a half inch to one inch possible. Lows in the mid 40s to lower 50s. Southeast wind 15 to 30 Mph with Gusts to 45 Mph decreasing to 10 to 20 Mph with Gusts to 30 Mph after midnight.

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Lake Ketchum Temperature Statistics

October Temperature

Arlington Municipal Airport (11.8 miles)

  • Lowest 14 October, 2025

    28.9 °F

  • Average October

    50.7 °F

  • Highest 7 October, 2025

    73.9 °F

Climate (2020–Present)

Arlington Municipal Airport (11.8 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    50.6 °F

  • Average High 2020–2025

    59.7 °F
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