Portland Rainfall Forecast

Today 20 Sep
75%
Mon 21 Sep
15%
Tue 22 Sep
15%
Wed 23 Sep
No Rain
Thu 24 Sep
5%
Fri 25 Sep
No Rain
Sat 26 Sep
No Rain

Portland Rainfall Statistics

September Rainfall

Watertown (12.4 miles)

Total Rainfall 2026
22in
Daily Average 2026
0.1in
Wettest Day 1 August, 2026
5in
Wet Days 2026
46/263 (17%)
Total Rainfall August
7.2in
Daily Average August
0.2in
Wettest Day 1 August, 2026
5in
Wet Days August
9/31 (29%)
Total Rainfall September
2.4in
Daily Average September
0.1in
Wettest Day 3 September, 2026
1.1in
Wet Days September
5/20 (25%)

Climate (2021–2025)

Watertown (12.4 miles)

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

Annual Average 2021–2025
26.3in
Monthly Average 2021–2026
2.6in
Daily Average 2021–2026
0.1in
Wettest Day 1 August, 2026
5in

Get WillyWeather+ to remove ads