Old Rock Tank Rainfall Forecast

Today 23 Sep
20%
Thu 24 Sep
10%
Fri 25 Sep
5%
Sat 26 Sep
No Rain
Sun 27 Sep
5%
Mon 28 Sep
10%
Tue 29 Sep
25%

Old Rock Tank Rainfall Statistics

September Rainfall

Pleasanton Municipal Airport (28.6 miles)

Total Rainfall 2026
32.7in
Daily Average 2026
0.1in
Wettest Day 1 May, 2026
8in
Wet Days 2026
43/266 (16%)
Total Rainfall August
0in
Daily Average August
0in
Wettest Day 1 August, 2026
0in
Wet Days August
–
Total Rainfall September
1.2in
Daily Average September
0.1in
Wettest Day 18 September, 2026
1.2in
Wet Days September
1/23 (4%)

Climate (2021–2025)

Pleasanton Municipal Airport (28.6 miles)

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Annual Average 2021–2025
24.7in
Monthly Average 2021–2026
2.3in
Daily Average 2021–2026
0.1in
Wettest Day 1 May, 2026
8in

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