Wind
0 mph
N
Local Forecast
Current conditions, 5-day forecast, active weather alerts for Castro Valley, CA
Hour-by-Hour Current Observation
Clear
Wind
0 mph
N
UV Index
2
Low
Humidity
64%
Dew 53°F
Sun
7:27 AM · 6:17 PM
Rise · Set
Source: OAKLAND (KOAK). Slider scrubs the next 12 hours.
5-Day Outlook
This Afternoon
Forecast Missing
Overnight: Forecast Missing
This Afternoon
Sunny, with a high near 67. North wind around 8 mph.
Night
Clear, with a low around 50. Northeast wind 1 to 5 mph.
Saturday
Forecast Missing
Overnight: Forecast Missing
Saturday
Sunny, with a high near 71. North wind around 5 mph.
Night
Mostly clear, with a low around 51. East wind around 1 mph.
Sunday
Forecast Missing
Overnight: Forecast Missing
Sunday
Mostly sunny, with a high near 72. Northeast wind 1 to 5 mph.
Night
Partly cloudy, with a low around 52.
Monday
Forecast Missing
Overnight: Forecast Missing
Monday
Mostly sunny, with a high near 68.
Night
Partly cloudy, with a low around 50.
Tuesday
Forecast Missing
Overnight: Forecast Missing
Tuesday
Mostly sunny, with a high near 67.
Night
Partly cloudy, with a low around 49.
Castro Valley, CA Weather Analysis Tools
Regional Radar
Composite reflectivity with Lightning overlay.
Regional Observations
Regional & historic weather conditions near Castro Valley, CA.
Active Alerts
Per-location alert detail and NWS source feeds.
Storm Reports
Recent storm reports including wind, hail, and tornadoes.
Model Analysis
Interactive forecast model guidance.
Satellite Imagery
GOES-East and GOES-West, visible and infrared.