Riverside County Park Rainfall Forecast

Today 6 Sep
75%
Mon 7 Sep
No Rain
Tue 8 Sep
No Rain
Wed 9 Sep
No Rain
Thu 10 Sep
No Rain
Fri 11 Sep
20%
Sat 12 Sep
10%

Riverside County Park Rainfall Statistics

September Rainfall

Portland, Portland-Troutdale Airport (12.4 miles)

Total Rainfall 2026
19.7in
Daily Average 2026
0.1in
Wettest Day 12 March, 2026
1.8in
Wet Days 2026
76/249 (31%)
Total Rainfall August
0.01in
Daily Average August
0in
Wettest Day 29 August, 2026
0.01in
Wet Days August
1/31 (3%)
Total Rainfall September
0.6in
Daily Average September
0.1in
Wettest Day 2 September, 2026
0.4in
Wet Days September
3/6 (50%)

Climate (2021–2025)

Portland, Portland-Troutdale Airport (12.4 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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