Larch Mountain Rainfall Forecast

Today 9 Sep
No Rain
Thu 10 Sep
No Rain
Fri 11 Sep
10%
Sat 12 Sep
60%
Sun 13 Sep
35%
Mon 14 Sep
5%
Tue 15 Sep
5%

Larch Mountain Rainfall Statistics

September Rainfall

Portland, Portland-Troutdale Airport (14.9 miles)

Total Rainfall 2026
20in
Daily Average 2026
0.1in
Wettest Day 12 March, 2026
1.8in
Wet Days 2026
77/252 (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
0.9in
Daily Average September
0.2in
Wettest Day 6 September, 2026
0.4in
Wet Days September
4/9 (44%)

Climate (2021–2025)

Portland, Portland-Troutdale Airport (14.9 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