Northwest Seattle Rainfall Forecast

Today 21 Sep
15%
Tue 22 Sep
15%
Wed 23 Sep
5%
Thu 24 Sep
65%
Fri 25 Sep
50%
Sat 26 Sep
5%
Sun 27 Sep
15%

Northwest Seattle Rainfall Statistics

September Rainfall

Boeing Field - King County International Airport (10.6 miles)

Total Rainfall 2026
12.9in
Daily Average 2026
0.05in
Wettest Day 3 September, 2026
0.8in
Wet Days 2026
65/264 (25%)
Total Rainfall August
0.1in
Daily Average August
0in
Wettest Day 29 August, 2026
0.1in
Wet Days August
1/31 (3%)
Total Rainfall September
1.3in
Daily Average September
0.1in
Wettest Day 3 September, 2026
0.8in
Wet Days September
5/21 (24%)

Climate (2021–2025)

Boeing Field - King County International Airport (10.6 miles)

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Annual Average 2021–2025
23.1in
Monthly Average 2021–2026
1.9in
Daily Average 2021–2026
0.1in
Wettest Day 28 February, 2022
1.4in

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