Castro Valley, California Weather
Castro Valley, California — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery, tide predictions, marine conditions and a solunar fishing forecast for Castro Valley, Alameda County.
Tides, marine forecast and fishing conditions near Castro Valley. Tide source:
Flight conditions near Castro Valley. Data source: locating…
About Castro Valley, California
Castro Valley breathes with a gentle, rolling green that spills down from the chaparral-clad hills, a landscape shaped by ancient creeks that whisper through the valley floor. It lies 1.8 miles north of Hayward, CA (from Hayward, CA: bearing 350°T), and is situated 4.4 miles east-south-east of San Leandro. The air here, especially as the sun begins its slow descent, carries the faint, sweet perfume of eucalyptus and damp earth, a fragrance that clings to the very stones and weathered fences. Sunlight, when it breaks through the common coastal haze, paints the broad, open spaces in hues of burnished gold, illuminating the scattered live oaks that stand like stoic sentinels against the encroaching sky. The terrain itself offers a quiet invitation to explore, with slopes that invite the eye upward and open expanses that promise a sense of spaciousness, a welcome contrast to the more tightly packed urban centers that lie just beyond its immediate embrace. The story of Castro Valley is one of agricultural roots, where ranches once stretched across these fertile lands, their prosperity tied to the bounty of the soil and the steady flow of water from the surrounding hills. This legacy is still visible in the occasional remaining farmstead and the enduring agricultural zoning that protects pockets of open land. The local economy, while now diversified, retains a connection to its past, with a practical, working-class spirit that finds expression in its local businesses and the steady hum of daily life. A notable feature of Castro Valley is its commitment to green spaces, with numerous parks and recreational areas that serve as vital lungs for the community, offering residents ample opportunity to connect with the natural beauty that defines this particular corner of Alameda County.
Live animated radar for Castro Valley and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Castro Valley, Alameda County, California |
| Coordinates | 37.694097°N, 122.086352°W |
| Timezone | Pacific Time (America/Los_Angeles) |
| ZIP Code(s) | 94546, 94552 |
| Area Code | 510 |
| Page generated | July 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Castro Valley, California Weather Page
This page provides live weather conditions and forecasts for Castro Valley, California, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, real-time aviation weather (live METAR and TAF reports from the nearest reporting airport, with a modeled estimate shown when no station is in range), precipitation radar and NOAA GOES-16 satellite imagery. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Castro Valley includes coordinates 37.694097°N, 122.086352°W, situated in Alameda County. ZIP code 94546, 94552. Telephone area code: 510. Timezone: Pacific Time (America/Los_Angeles).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. Aviation data is sourced from aviationweather.gov (NOAA), with a modeled estimate used where no nearby reporting station is available. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
