Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
California faces 1st major storm in weeks. Here's when to expect heavy rain. Chevron right

Castro Valley, CA

57°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Castro Valley

California

57°
No results found.
Try searching for a city, zip code or point of interest.
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Castro Valley, CA Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center
Today Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities
Sunday, March 15

Day

3/15
59°Hi
RealFeel® 67°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
RealFeel Shade™ 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
Mostly sunny

Max UV Index5.0 (Moderate)

WindNW 5 mph

Wind Gusts8 mph

Probability of Precipitation10%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover14%

Night

3/15
44°Lo
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
Clear to partly cloudy

WindNW 5 mph

Wind Gusts12 mph

Probability of Precipitation20%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover16%

Sun & Moon

11 hrs 56 mins
Rise 6:20 AM
Set 6:16 PM
Waning Crescent
Rise 4:38 AM
Set 2:55 PM

Temperature History

3/15
High
Low
Forecast
59°
44°
Average
64°
47°
Last Year
55°
42°

Further Ahead

Hourly

Daily

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Record warmth to expand across central, eastern US next week

7 hours ago

Weather News

99% of Florida is in drought with almost no rain falling in February

1 day ago

Winter Weather

California faces first major storm in weeks; heavy rain, feet of snow

4 hours ago

Winter Weather

Iguana population may be learning to adapt after recent cold snap

1 day ago

Severe Weather

Rain, storms to focus on southern US as NASCAR season opener nears

4 hours ago

 More Stories

Featured Stories

Weather News

What's behind South Carolina’s recent earthquakes

6 hours ago

Weather News

Gray wolf tracked in Los Angeles County for first time

3 days ago

Recreation

Death Valley could have rare superbloom in 2026

1 day ago

Astronomy

A 'ring of fire' eclipse is coming Feb. 17

3 days ago

Recreation

Yosemite ‘Firefall’ returns soon, but weather will decide how it looks

2 days ago
World North America United States California Castro Valley

Weather Near Castro Valley:

  • Oakland, CA
  • San Francisco, CA
  • San Jose, CA
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...