Clackamas Rainfall Forecast

Today 18 May
45%
Mon 19 May
90%
Tue 20 May
35%
Wed 21 May
10%
Thu 22 May
5%
Fri 23 May
20%
Sat 24 May
15%

Clackamas Rainfall Statistics

May Rainfall

Portland, Portland-Troutdale Airport (12.4 miles)

Total Rainfall 2025
16in
Daily Average 2025
0.1in
Wettest Day 21 March, 2025
1.1in
Wet Days 2025
68/138 (49%)
Total Rainfall April
1.5in
Daily Average April
0.05in
Wettest Day 6 April, 2025
0.6in
Wet Days April
12/30 (40%)
Total Rainfall May
0.5in
Daily Average May
0.03in
Wettest Day 12 May, 2025
0.2in
Wet Days May
5/18 (28%)

Climate (2010–Present)

Portland, Portland-Troutdale Airport (12.4 miles)

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Annual Average 2020–2024
38.9in
Monthly Average 2020–2025
3.3in
Daily Average 2020–2025
0.1in
Wettest Day 10 June, 2022
2.1in

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