Capitol Hill Weather Forecast
- 54
- 68
Chance Rain
- 55
- 71
Mostly Sunny
- 57
- 75
Mostly Sunny
- 54
- 71
Mostly Cloudy
- 53
- 68
Chance Rain
- 54
- 68
Slight Chance Rain
Today 7 Sep City of Seattle
Cloudy until late afternoon then becoming partly sunny. A slight chance of rain late in the morning. A chance of rain early in the Afternoon, then a slight chance of rain late in the afternoon. Highs in the mid 60s to lower 70s. South wind around 10 Mph in the morning becoming light.
Tonight 7 Sep City of Seattle
Partly cloudy. Lows in the lower to mid 50s. Light wind.
Capitol Hill Temperature Statistics
September Temperature
Boeing Field - King County International Airport (5 miles)
Lowest 5 September, 2026
53.1 °FAverage September
61.5 °FHighest 2 September, 2026
71.1 °F
Climate (2021–2026)
Boeing Field - King County International Airport (5 miles)
Average Low 2021–2026
47.2 °FAverage 2021–2026
54.2 °FAverage High 2021–2026
61.6 °F