Capitol Hill Weather Forecast

    • 55
    • 65

    Rain Likely

    • 51
    • 61

    Rain

    • 50
    • 63

    Partly Sunny

    • 53
    • 64

    Mostly Cloudy

    • 51
    • 64

    Partly Sunny

    • 51
    • 64

    Partly Sunny

    • 51
    • 67

    Partly Sunny

Today 28 Sep City of Seattle

Partly sunny. Highs in the mid to upper 60s.

Tonight 28 Sep City of Seattle

Breezy. Mostly cloudy. A chance of rain after midnight. Lows in the mid to upper 50s. South wind 15 to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Capitol Hill Temperature Statistics

September Temperature

Boeing Field - King County International Airport (5 miles)

  • Lowest 26 September, 2026

    45 °F

  • Average September

    61.3 °F

  • Highest 9 September, 2026

    78.1 °F

Climate (2021–2026)

Boeing Field - King County International Airport (5 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    61.6 °F
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