Hamilton Weather Forecast

    • 54
    • 76

    Mostly Sunny

    • 54
    • 76

    Partly Sunny

    • 57
    • 79

    Mostly Sunny

    • 57
    • 80

    Partly Sunny

    • 57
    • 81

    Mostly Cloudy

    • 57
    • 81

    Mostly Cloudy

Today 11 Aug Foothills and Valleys of the North Cascades

Sunny. Highs in the 70s. Light wind.

Tonight 11 Aug Foothills and Valleys of the North Cascades

Mostly clear. Lows in the lower to mid 50s. Light wind.

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Hamilton Temperature Statistics

August Temperature

Burlington/Mount Vernon, Skagit Regional Airport (19.9 miles)

  • Lowest 3 August, 2026

    50 °F

  • Average August

    62.8 °F

  • Highest 6 August, 2026

    82.4 °F

Climate (2021–2026)

Burlington/Mount Vernon, Skagit Regional Airport (19.9 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    59.3 °F
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