St Helena Rainfall Forecast

Today 3 Oct
25%
Sat 4 Oct
No Rain
Sun 5 Oct
No Rain
Mon 6 Oct
No Rain
Tue 7 Oct
No Rain
Wed 8 Oct
No Rain
Thu 9 Oct
5%

St Helena Rainfall Statistics

October Rainfall

Petaluma Municipal Airport (18 miles)

Total Rainfall 2025
8.5in
Daily Average 2025
0.03in
Wettest Day 4 February, 2025
1.6in
Wet Days 2025
31/276 (11%)
Total Rainfall September
0.1in
Daily Average September
0in
Wettest Day 8 September, 2025
0.04in
Wet Days September
4/30 (13%)
Total Rainfall October
0.01in
Daily Average October
0.01in
Wettest Day 1 October, 2025
0.01in
Wet Days October
1/3 (33%)

Climate (2011–Present)

Petaluma Municipal Airport (18 miles)

Take a look at our website widgetsAvailable free! Find Out More

Annual Average 2020–2024
10.1in
Monthly Average 2020–2025
0.9in
Daily Average 2020–2025
0.03in
Wettest Day 24 October, 2021
4.8in

Get WillyWeather+ to remove ads