Enter your search query in the box below.

Castro Valley, California Weather

Castro Valley, California — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery, tides and marine conditions for Castro Valley, Alameda County.

🌡️ Current Conditions
Loading current conditions…
24-Hour Forecast
Loading hourly forecast…
Current Conditions Detail
Loading detail…
7-Day Forecast
Loading 7-day forecast…
🌊 Marine & Fishing

Tides, marine forecast and fishing conditions near Castro Valley. Nearest NOAA tide station:

Loading tide data…
Loading marine conditions…
✈️ Aviation Weather

Flight conditions near Castro Valley — sourced from the FAA Aviation Weather Center. Nearest reporting station: locating…

Loading aviation data…
🌿 Air Quality
Loading air quality data…
NWS Extended Forecast
Loading NWS forecast…
📡 Precipitation Radar

Live animated radar for Castro Valley and surroundings — RainViewer.

Loading radar…
🛰️ Satellite Imagery

NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.

NOAA GOES-16 CONUS GEOCOLOR satellite animated loop
🛰️ GEOCOLOR loop 🌡️ Infrared (IR) 🌀 NHC Hurricane Satellite 🔗 NOAA Full Viewer

Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload

🌙 Astronomy
Calculating…

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.

LocationCastro Valley, Alameda County, California
Coordinates37.694097°N, 122.086352°W
TimezonePacific Time (America/Los_Angeles)
ZIP Code(s)94546, 94552
Area Code510
Page generatedJune 2026
Weather dataOpen-Meteo (open-source), NOAA National Weather Service