Columbia River - Westport Slough Entrance Rainfall Forecast

Today 8 May
No Rain
Sat 9 May
No Rain
Sun 10 May
No Rain
Mon 11 May
No Rain
Tue 12 May
15%
Wed 13 May
15%
Thu 14 May
20%

Columbia River - Westport Slough Entrance Rainfall Statistics

May Rainfall

Southwest Washington Regional Airport (23 miles)

Total Rainfall 2026
15in
Daily Average 2026
0.1in
Wettest Day 13 March, 2026
1.6in
Wet Days 2026
58/128 (45%)
Total Rainfall April
2.3in
Daily Average April
0.1in
Wettest Day 15 April, 2026
0.6in
Wet Days April
7/30 (23%)
Total Rainfall May
0in
Daily Average May
0in
Wettest Day 1 May, 2026
0in
Wet Days May
–

Climate (2010–Present)

Southwest Washington Regional Airport (23 miles)

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Annual Average 2021–2025
39.7in
Monthly Average 2021–2026
3.3in
Daily Average 2021–2026
0.1in
Wettest Day 4 November, 2022
4.2in

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