Columbia River - Sandy River Entrance Rainfall Forecast

Today 17 May
No Rain
Mon 18 May
No Rain
Tue 19 May
No Rain
Wed 20 May
No Rain
Thu 21 May
No Rain
Fri 22 May
No Rain
Sat 23 May
No Rain

Columbia River - Sandy River Entrance Rainfall Statistics

May Rainfall

Portland, Portland-Troutdale Airport (0.6 miles)

Total Rainfall 2026
16.5in
Daily Average 2026
0.1in
Wettest Day 12 March, 2026
1.8in
Wet Days 2026
59/137 (43%)
Total Rainfall April
3.3in
Daily Average April
0.1in
Wettest Day 15 April, 2026
0.8in
Wet Days April
11/30 (37%)
Total Rainfall May
0.4in
Daily Average May
0.03in
Wettest Day 13 May, 2026
0.2in
Wet Days May
5/17 (29%)

Climate (2010–Present)

Portland, Portland-Troutdale Airport (0.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

Annual Average 2021–2025
39.7in
Monthly Average 2021–2026
3.4in
Daily Average 2021–2026
0.1in
Wettest Day 18 December, 2025
2.3in

Get WillyWeather+ to remove ads