Weather in Castro Valley, California
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 06:12 PM ET · Refreshes every hour
68°F
Clear sky
Feels like 67°F
60%
Humidity
11 mph
Wind Speed
About Weather in Castro Valley
Castro Valley is located in California (coordinates: 37.708276°N, 122.062769°W). Weather data is sourced from Open-Meteo, a free and open meteorological API using data from national weather services including NOAA.
All temperatures are displayed in Fahrenheit. Wind speed is in miles per hour.