Portland Rainfall Forecast

Today 16 Aug
No Rain
Sun 17 Aug
45%
Mon 18 Aug
35%
Tue 19 Aug
10%
Wed 20 Aug
20%
Thu 21 Aug
20%
Fri 22 Aug
5%

Portland Rainfall Statistics

August Rainfall

Portland, Portland International Jetport (2.5 miles)

Total Rainfall 2025
25.5in
Daily Average 2025
0.1in
Wettest Day 10 May, 2025
2.3in
Wet Days 2025
80/228 (35%)
Total Rainfall July
2.5in
Daily Average July
0.1in
Wettest Day 20 July, 2025
1.2in
Wet Days July
8/31 (26%)
Total Rainfall August
0.04in
Daily Average August
0in
Wettest Day 1 August, 2025
0.04in
Wet Days August
1/16 (6%)

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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