Columbia River - Ackerman Island Rainfall Forecast

Today 14 Sep
95%
Mon 15 Sep
No Rain
Tue 16 Sep
No Rain
Wed 17 Sep
10%
Thu 18 Sep
5%
Fri 19 Sep
10%
Sat 20 Sep
15%

Columbia River - Ackerman Island Rainfall Statistics

September Rainfall

Portland, Portland-Troutdale Airport (2.5 miles)

Total Rainfall 2025
19in
Daily Average 2025
0.1in
Wettest Day 21 March, 2025
1.1in
Wet Days 2025
84/257 (33%)
Total Rainfall August
0.3in
Daily Average August
0.01in
Wettest Day 16 August, 2025
0.3in
Wet Days August
2/31 (6%)
Total Rainfall September
0.1in
Daily Average September
0.01in
Wettest Day 5 September, 2025
0.1in
Wet Days September
1/14 (7%)

Climate (2010–Present)

Portland, Portland-Troutdale Airport (2.5 miles)

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Annual Average 2020–2024
38.9in
Monthly Average 2020–2025
3.2in
Daily Average 2020–2025
0.1in
Wettest Day 10 June, 2022
2.1in

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