Capitol Hill Weather Forecast

    • 53
    • 69

    Increasing Clouds

    • 54
    • 70

    Mostly Cloudy

    • 54
    • 71

    Partly Sunny

    • 55
    • 72

    Partly Sunny

    • 55
    • 71

    Partly Sunny

    • 56
    • 73

    Partly Sunny

Today 4 Sep City of Seattle

Partly sunny. A chance of Showers in the morning. Highs in the mid 60s to lower 70s. Light wind becoming northwest to 10 Mph in the afternoon.

Tonight 4 Sep City of Seattle

Mostly cloudy. Lows in the lower to mid 50s. North wind to 10 Mph in the evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Capitol Hill Temperature Statistics

September Temperature

Boeing Field - King County International Airport (5 miles)

  • Lowest 2 September, 2026

    55 °F

  • Average September

    62.3 °F

  • Highest 2 September, 2026

    71.1 °F

Climate (2021–2026)

Boeing Field - King County International Airport (5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    61.6 °F
Get WillyWeather+ to remove ads