Ruby Arm Weather Forecast

    • 57
    • 76

    Mostly Cloudy

    • 55
    • 72

    Partly Sunny

    • 58
    • 73

    Chance Rain

    • 59
    • 69

    Rain Likely

    • 54
    • 67

    Rain Likely

    • 57
    • 71

    Partly Sunny

    • 60
    • 78

    Mostly Sunny

Today 3 Aug Cascades of Whatcom and Skagit Counties

Mostly sunny. Freezing level near 12500 feet.

Tonight 3 Aug Cascades of Whatcom and Skagit Counties

Mostly cloudy. Freezing level near 12500 feet.

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Ruby Arm Temperature Statistics

August Temperature

Arlington Municipal Airport (64.6 miles)

  • Lowest 1 August, 2025

    57.9 °F

  • Average August

    67 °F

  • Highest 1 August, 2025

    79 °F

Climate (2020–Present)

Arlington Municipal Airport (64.6 miles)

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  • Average Low 2020–2025

    42.3 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    59.7 °F
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