Castro Valley Rainfall Forecast

Today 4 Jul
No Rain
Sun 5 Jul
No Rain
Mon 6 Jul
No Rain
Tue 7 Jul
No Rain
Wed 8 Jul
No Rain
Thu 9 Jul
No Rain
Fri 10 Jul
No Rain

Castro Valley Rainfall Statistics

July Rainfall

Hayward, Hayward Air Terminal (3.1 miles)

Total Rainfall 2026
11.8in
Daily Average 2026
0.1in
Wettest Day 4 January, 2026
1.6in
Wet Days 2026
32/185 (17%)
Total Rainfall June
0.04in
Daily Average June
0in
Wettest Day 9 June, 2026
0.03in
Wet Days June
2/30 (7%)
Total Rainfall July
0in
Daily Average July
0in
Wettest Day 1 July, 2026
0in
Wet Days July
–

Climate (2021–2025)

Hayward, Hayward Air Terminal (3.1 miles)

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Annual Average 2021–2025
19.4in
Monthly Average 2021–2026
1.7in
Daily Average 2021–2026
0.1in
Wettest Day 31 December, 2022
4.3in

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