St Helens Rainfall Forecast

Today 11 Sep
10%
Fri 12 Sep
No Rain
Sat 13 Sep
65%
Sun 14 Sep
70%
Mon 15 Sep
10%
Tue 16 Sep
5%
Wed 17 Sep
10%

St Helens Rainfall Statistics

September Rainfall

Scappoose Industrial Airpark (6.2 miles)

Total Rainfall 2025
13.2in
Daily Average 2025
0.1in
Wettest Day 24 February, 2025
1in
Wet Days 2025
69/254 (27%)
Total Rainfall August
0.4in
Daily Average August
0.01in
Wettest Day 6 August, 2025
0.2in
Wet Days August
3/31 (10%)
Total Rainfall September
0.04in
Daily Average September
0in
Wettest Day 8 September, 2025
0.03in
Wet Days September
2/11 (18%)

Climate (2010–Present)

Scappoose Industrial Airpark (6.2 miles)

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Annual Average 2020–2024
36.7in
Monthly Average 2020–2025
3in
Daily Average 2020–2025
0.1in
Wettest Day 4 November, 2022
3.1in

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