Castle Rock State Park Entrance Rainfall Forecast

Today 15 Sep
No Rain
Tue 16 Sep
No Rain
Wed 17 Sep
10%
Thu 18 Sep
30%
Fri 19 Sep
25%
Sat 20 Sep
20%
Sun 21 Sep
5%

Castle Rock State Park Entrance Rainfall Statistics

September Rainfall

San Jose, San Jose International Airport (12.4 miles)

Total Rainfall 2025
6.1in
Daily Average 2025
0.02in
Wettest Day 13 February, 2025
1.1in
Wet Days 2025
24/258 (9%)
Total Rainfall August
0in
Daily Average August
0in
Wettest Day 1 August, 2025
0in
Wet Days August
–
Total Rainfall September
0.4in
Daily Average September
0.03in
Wettest Day 10 September, 2025
0.4in
Wet Days September
1/15 (7%)

Climate (2010–Present)

San Jose, San Jose International Airport (12.4 miles)

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Annual Average 2020–2024
10.6in
Monthly Average 2020–2025
0.9in
Daily Average 2020–2025
0.03in
Wettest Day 13 December, 2021
2.2in

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