Central Seattle Weather Forecast
- 53
- 70
Becoming Sunny
- 54
- 73
Mostly Sunny
- 59
- 72
Rain Likely
- 53
- 69
Chance Rain
- 55
- 71
Partly Sunny
- 57
- 70
Chance Rain
Today 18 Sep City of Seattle
Partly sunny in the morning then becoming sunny. Highs in the mid 60s to lower 70s. Light wind becoming north around 10 Mph in the afternoon.
Tonight 18 Sep City of Seattle
Mostly clear. Lows in the lower to mid 50s. North wind to 10 Mph in the evening becoming light.
Central Seattle Temperature Statistics
September Temperature
Boeing Field - King County International Airport (4.3 miles)
Lowest 15 September, 2025
54 °FAverage September
65.5 °FHighest 3 September, 2025
81 °F
Climate (2020–Present)
Boeing Field - King County International Airport (4.3 miles)
Average Low 2020–2025
47 °FAverage 2020–2025
54 °FAverage High 2020–2025
61.4 °F