Hillsboro Rainfall Forecast

Today 11 May
No Rain
Tue 12 May
35%
Wed 13 May
25%
Thu 14 May
5%
Fri 15 May
20%
Sat 16 May
20%
Sun 17 May
5%

Hillsboro Rainfall Statistics

May Rainfall

Portland-Hillsboro Airport (1.9 miles)

Total Rainfall 2026
15in
Daily Average 2026
0.1in
Wettest Day 11 March, 2026
1.4in
Wet Days 2026
57/131 (44%)
Total Rainfall April
2.9in
Daily Average April
0.1in
Wettest Day 15 April, 2026
0.6in
Wet Days April
11/30 (37%)
Total Rainfall May
0.02in
Daily Average May
0in
Wettest Day 2 May, 2026
0.02in
Wet Days May
1/11 (9%)

Climate (2010–Present)

Portland-Hillsboro Airport (1.9 miles)

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Annual Average 2021–2025
34.4in
Monthly Average 2021–2026
2.9in
Daily Average 2021–2026
0.1in
Wettest Day 26 December, 2022
2.5in

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