Portland Rainfall Forecast

Today 12 May
5%
Tue 13 May
No Rain
Wed 14 May
5%
Thu 15 May
25%
Fri 16 May
20%
Sat 17 May
60%
Sun 18 May
65%

Portland Rainfall Statistics

May Rainfall

Portland, Portland International Jetport (2.5 miles)

Total Rainfall 2025
18.5in
Daily Average 2025
0.1in
Wettest Day 10 May, 2025
2.3in
Wet Days 2025
53/132 (40%)
Total Rainfall April
4.6in
Daily Average April
0.2in
Wettest Day 26 April, 2025
1.5in
Wet Days April
16/30 (53%)
Total Rainfall May
4.3in
Daily Average May
0.4in
Wettest Day 10 May, 2025
2.3in
Wet Days May
8/12 (67%)

Climate (2010–Present)

Portland, Portland International Jetport (2.5 miles)

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Annual Average 2020–2024
46.9in
Monthly Average 2020–2025
3.9in
Daily Average 2020–2025
0.1in
Wettest Day 14 October, 2022
2.8in

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