Hamilton Weather Forecast

    • 56
    • 80

    Mostly Sunny

    • 56
    • 80

    Partly Sunny

    • 55
    • 78

    Partly Sunny

    • 55
    • 78

    Partly Sunny

    • 54
    • 75

    Partly Sunny

    • 54
    • 75

    Mostly Cloudy

Today 14 Aug Foothills and Valleys of the North Cascades

Sunny. A slight chance of Thunderstorms in the afternoon. Highs in the mid 70s to lower 80s. Light wind.

Tonight 14 Aug Foothills and Valleys of the North Cascades

Mostly clear. A slight chance of Showers in the evening. Lows in the mid to upper 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

    62.6 °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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