Chehalis River - Cosmopolis Rainfall Forecast

Today 12 Sep
90%
Sun 13 Sep
70%
Mon 14 Sep
No Rain
Tue 15 Sep
No Rain
Wed 16 Sep
No Rain
Thu 17 Sep
No Rain
Fri 18 Sep
No Rain

Chehalis River - Cosmopolis Rainfall Statistics

September Rainfall

Hoquiam, Bowerman Airport (6.8 miles)

Total Rainfall 2026
37.1in
Daily Average 2026
0.1in
Wettest Day 17 March, 2026
2.3in
Wet Days 2026
95/255 (37%)
Total Rainfall August
0.3in
Daily Average August
0.01in
Wettest Day 1 August, 2026
0.1in
Wet Days August
8/31 (26%)
Total Rainfall September
0.7in
Daily Average September
0.1in
Wettest Day 2 September, 2026
0.4in
Wet Days September
3/12 (25%)

Climate (2021–2025)

Hoquiam, Bowerman Airport (6.8 miles)

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Annual Average 2021–2025
66.9in
Monthly Average 2021–2026
5.5in
Daily Average 2021–2026
0.2in
Wettest Day 6 January, 2022
5.8in

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