Sourdough Lake Weather Forecast

    • 49
    • 64

    Increasing Clouds

    • 48
    • 60

    Increasing Clouds

    • 50
    • 61

    Chance Rain

    • 50
    • 57

    Rain Likely

    • 47
    • 55

    Rain Likely

    • 50
    • 60

    Partly Sunny

    • 53
    • 67

    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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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sourdough Lake Temperature Statistics

August Temperature

Burlington/Mount Vernon, Skagit Regional Airport (62.1 miles)

  • Lowest 1 August, 2025

    55.4 °F

  • Average August

    64.9 °F

  • Highest 1 August, 2025

    77 °F

Climate (2020–Present)

Burlington/Mount Vernon, Skagit Regional Airport (62.1 miles)

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  • Average Low 2020–2025

    43.7 °F

  • Average 2020–2025

    51.3 °F

  • Average High 2020–2025

    59.8 °F
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