Portland Rainfall Forecast

Today 14 May
50%
Thu 15 May
40%
Fri 16 May
55%
Sat 17 May
80%
Sun 18 May
15%
Mon 19 May
40%
Tue 20 May
15%

Portland Rainfall Statistics

May Rainfall

Portland, Portland International Airport (5.6 miles)

Total Rainfall 2025
13.3in
Daily Average 2025
0.1in
Wettest Day 23 February, 2025
1in
Wet Days 2025
63/134 (47%)
Total Rainfall April
1in
Daily Average April
0.03in
Wettest Day 6 April, 2025
0.4in
Wet Days April
11/30 (37%)
Total Rainfall May
0.3in
Daily Average May
0.03in
Wettest Day 12 May, 2025
0.2in
Wet Days May
2/14 (14%)

Climate (2010–Present)

Portland, Portland International Airport (5.6 miles)

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Annual Average 2020–2024
36.8in
Monthly Average 2020–2025
3.1in
Daily Average 2020–2025
0.1in
Wettest Day 26 December, 2022
2.1in

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