Trillium Lake Rainfall Forecast

Today 22 Sep
5%
Wed 23 Sep
No Rain
Thu 24 Sep
80%
Fri 25 Sep
90%
Sat 26 Sep
No Rain
Sun 27 Sep
15%
Mon 28 Sep
15%

Trillium Lake Rainfall Statistics

September Rainfall

The Dalles Municipal Airport (36.7 miles)

Total Rainfall 2026
6.2in
Daily Average 2026
0.02in
Wettest Day 28 May, 2026
0.6in
Wet Days 2026
42/265 (16%)
Total Rainfall August
0.01in
Daily Average August
0in
Wettest Day 15 August, 2026
0.01in
Wet Days August
1/31 (3%)
Total Rainfall September
0.6in
Daily Average September
0.03in
Wettest Day 6 September, 2026
0.2in
Wet Days September
7/22 (32%)

Climate (2021–2025)

The Dalles Municipal Airport (36.7 miles)

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Annual Average 2021–2025
11.2in
Monthly Average 2021–2026
1in
Daily Average 2021–2026
0.03in
Wettest Day 18 December, 2025
2.2in

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