Marblemount Weather Forecast

    • 37
    • 62

    Sunny

    • 36
    • 63

    Mostly Sunny

    • 41
    • 59

    Rain Likely

    • 41
    • 56

    Rain Likely

    • 43
    • 54

    Rain

    • 40
    • 52

    Rain

    • 38
    • 52

    Chance Rain Showers

Today 14 Oct Foothills and Valleys of the North Cascades

Sunny. Areas of frost in the morning. Highs in the upper 50s to mid 60s. Northeast wind to 10 Mph becoming northwest in the afternoon.

Tonight 14 Oct Foothills and Valleys of the North Cascades

Clear. Lows in the mid 30s to lower 40s. Light wind.

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  • Temperature Real-Time

Marblemount Temperature Statistics

October Temperature

Arlington Municipal Airport (41 miles)

  • Lowest 6 October, 2025

    37.4 °F

  • Average October

    53.8 °F

  • Highest 7 October, 2025

    73.9 °F

Climate (2020–Present)

Arlington Municipal Airport (41 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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