Portland Rainfall Forecast

Today 11 May
10%
Tue 12 May
No Rain
Wed 13 May
40%
Thu 14 May
95%
Fri 15 May
80%
Sat 16 May
15%
Sun 17 May
10%

Portland Rainfall Statistics

May Rainfall

Portland, Portland International Jetport (2.5 miles)

Total Rainfall 2026
11.4in
Daily Average 2026
0.1in
Wettest Day 16 March, 2026
1.5in
Wet Days 2026
56/131 (43%)
Total Rainfall April
3.1in
Daily Average April
0.1in
Wettest Day 30 April, 2026
0.9in
Wet Days April
15/30 (50%)
Total Rainfall May
0.3in
Daily Average May
0.03in
Wettest Day 6 May, 2026
0.2in
Wet Days May
3/11 (27%)

Climate (2010–Present)

Portland, Portland International Jetport (2.5 miles)

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Annual Average 2021–2025
46.1in
Monthly Average 2021–2026
3.8in
Daily Average 2021–2026
0.1in
Wettest Day 14 October, 2022
2.8in

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