Columbia River - Sandy Island Rainfall Forecast

Today 29 Dec
5%
Tue 30 Dec
No Rain
Wed 31 Dec
10%
Thu 1 Jan
75%
Fri 2 Jan
85%
Sat 3 Jan
70%
Sun 4 Jan
65%

Columbia River - Sandy Island Rainfall Statistics

December Rainfall

Southwest Washington Regional Airport (7.5 miles)

Total Rainfall 2025
35.8in
Daily Average 2025
0.1in
Wettest Day 8 December, 2025
2.4in
Wet Days 2025
147/363 (40%)
Total Rainfall November
5.3in
Daily Average November
0.2in
Wettest Day 6 November, 2025
0.7in
Wet Days November
20/30 (67%)
Total Rainfall December
10.1in
Daily Average December
0.4in
Wettest Day 8 December, 2025
2.4in
Wet Days December
23/29 (79%)

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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