Sandy River Delta Park Rainfall Forecast

Today 13 May
100%
Thu 14 May
30%
Fri 15 May
75%
Sat 16 May
90%
Sun 17 May
5%
Mon 18 May
5%
Tue 19 May
5%

Sandy River Delta Park Rainfall Statistics

May Rainfall

Portland, Portland-Troutdale Airport (1.9 miles)

Total Rainfall 2026
16.1in
Daily Average 2026
0.1in
Wettest Day 12 March, 2026
1.8in
Wet Days 2026
55/133 (41%)
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
0.04in
Daily Average May
0in
Wettest Day 2 May, 2026
0.04in
Wet Days May
1/13 (8%)

Climate (2010–Present)

Portland, Portland-Troutdale Airport (1.9 miles)

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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

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