Hamilton Weather Forecast

    • 58
    • 83

    Mostly Sunny

    • 60
    • 85

    Mostly Cloudy

    • 54
    • 74

    Rain Showers Likely

    • 52
    • 70

    Chance Rain

    • 55
    • 78

    Partly Sunny

    • 54
    • 77

    Partly Sunny

Today 20 Aug Foothills and Valleys of the North Cascades

Sunny. Highs in the 80s. Light wind becoming west around 10 Mph in the afternoon.

Tonight 20 Aug Foothills and Valleys of the North Cascades

Mostly clear. Lows in the mid to upper 50s. Northwest wind around 10 Mph becoming north after midnight.

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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

    62.4 °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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