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Rain Today in Castro Valley, CA: How Much Rain Fell — Last 24 Hour Rainfall Totals
Measured from radar and rain gauges by Precip.
0.00" of rain in Castro Valley, CA in the last 24 hours
Thu, Nov 5 total: 0.00"
- Past 7 days
- 0.14"
- 2026 so far
- 13.49" 16.8% below average
- Last rain
- 0.12" 4 days ago Nov 1, 8:00 AM - 11:00 AM UTC
- Your exact spot
- Rain varies block by block Pin your yard or field →
Precip measured 0.00" of rain in Castro Valley, CA over the last 24 hours and 0.14" over the past 7 days. So far in 2026, Castro Valley, CA has received 13.49" of rain, 16.8% below average (normal to date: 16.21").
Daily Rainfall Totals in Castro Valley, CA (Last 7 Days)
Observed 24-hour daily precipitation totals measured by Precip
Monthly Rainfall Totals in Castro Valley, CA (2026)
Accumulated monthly rainfall compared to 30-year normal averages
| Month | 2026 Total | 30-Yr Normal | vs. Normal |
|---|---|---|---|
| January | 2.38" | 4.22" | −1.84" (−44%) |
| February | 4.24" | 4.11" | +0.13" (+3%) |
| March | 0.15" | 3.45" | −3.30" (−96%) |
| April | 5.63" | 1.79" | +3.84" (+215%) |
| May | 0.39" | 0.82" | −0.44" (−53%) |
| June | 0.00" | 0.24" | −0.24" (−100%) |
| July | 0.00" | 0.01" | −0.01" (−100%) |
| August | 0.00" | 0.05" | −0.05" (−100%) |
| September | 0.20" | 0.13" | +0.08" (+61%) |
| October | 0.48" | 1.08" | −0.60" (−55%) |
| November (to date) | 0.02" | 0.31" | −0.29" (−95%) |
| 2026 YTD Total | 13.49" | 16.21" | −2.72" (16.8% below average) |
Rainfall Totals vs Normals (30 Year Average)
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Rain Forecast for Castro Valley, CA
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Nearby Parks, Stadiums & Trailheads
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- Pioneer Stadium (Stadium)
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