Columbia River - Sandy Island Rainfall Forecast

Today 29 Sep
100%
Tue 30 Sep
100%
Wed 1 Oct
90%
Thu 2 Oct
85%
Fri 3 Oct
40%
Sat 4 Oct
25%
Sun 5 Oct
10%

Columbia River - Sandy Island Rainfall Statistics

September Rainfall

Southwest Washington Regional Airport (7.5 miles)

Total Rainfall 2025
15in
Daily Average 2025
0.1in
Wettest Day 24 February, 2025
0.8in
Wet Days 2025
85/272 (31%)
Total Rainfall August
0.6in
Daily Average August
0.02in
Wettest Day 16 August, 2025
0.2in
Wet Days August
5/31 (16%)
Total Rainfall September
0.1in
Daily Average September
0in
Wettest Day 14 September, 2025
0.04in
Wet Days September
2/29 (7%)

Climate (2010–Present)

Southwest Washington Regional Airport (7.5 miles)

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Annual Average 2020–2024
39.1in
Monthly Average 2020–2025
3.2in
Daily Average 2020–2025
0.1in
Wettest Day 4 November, 2022
4.2in

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