Portland Rainfall Forecast

Today 30 May
100%
Sun 31 May
60%
Mon 1 Jun
55%
Tue 2 Jun
20%
Wed 3 Jun
10%
Thu 4 Jun
10%
Fri 5 Jun
5%

Portland Rainfall Statistics

May Rainfall

Portland, Portland International Jetport (2.5 miles)

Total Rainfall 2026
16.5in
Daily Average 2026
0.1in
Wettest Day 14 May, 2026
2in
Wet Days 2026
63/150 (42%)
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
5.4in
Daily Average May
0.2in
Wettest Day 14 May, 2026
2in
Wet Days May
10/30 (33%)

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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