Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
When frigid air loosen its grip on the Northeast, Midwest? Get the forecast. Chevron right

Port Costa, CA

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

Port Costa

California

57°
No results found.
Try searching for a city, zip code or point of interest.
settings
Port Costa, 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

Today's Weather

Fri, Jan 2

Plenty of clouds, turning windy this afternoon with periods of rain late in the afternoon Hi: 61°

Tonight: Windy with periods of rain; any downpour can cause temporary flooding on roadways and poor drainage areas Lo: 54°

Current Weather

2:29 PM

57°F
RealFeel® 55°
Cloudy More Details
RealFeel Shade™ 54°
Wind ESE 6 mph
Wind Gusts 12 mph
Air Quality Excellent

Port Costa Weather Radar

Port Costa Weather Radar
Static Radar Temporarily Unavailable
Thank you for your patience as we work to get everything up and running again.
Refresh Page
Clouds
Temperature

Hourly Weather

3 PM 59°
rain drop 31%
4 PM 58°
rain drop 49%
5 PM 57°
rain drop 66%
6 PM 57°
rain drop 66%
7 PM 57°
rain drop 49%
8 PM 57°
rain drop 49%
9 PM 57°
rain drop 53%
10 PM 56°
rain drop 66%
11 PM 56°
rain drop 49%
12 AM 57°
rain drop 65%
1 AM 57°
rain drop 65%
2 AM 56°
rain drop 65%

10-Day Weather Forecast

Today

1/2

61° 54°

Cloudy; afternoon rain, windy

Night: Windy with periods of rain

70%

Sat

1/3

62° 52°

Breezy with a few showers

Periods of rain

84%

Sun

1/4

57° 48°

Becoming windier with rain

Some clouds, a shower or two

91%

Mon

1/5

56° 45°

A little afternoon rain

Showers around in the evening

55%

Tue

1/6

58° 44°

Mostly cloudy with a shower

Cloudy with a few showers

55%

Wed

1/7

59° 36°

Low clouds

Partly cloudy and cool

25%

Thu

1/8

57° 34°

Times of clouds and sun

Clear and cool

24%

Fri

1/9

56° 31°

Plenty of sunshine

Clear

0%

Sat

1/10

55° 33°

Plenty of sunshine

Clear

0%

Sun

1/11

57° 33°

Plenty of sunshine

Clear

0%

Sun & Moon

9 hrs 36 mins
Rise 7:25 AM
Set 5:01 PM
Waxing Gibbous
Rise 4:12 PM
Set 8:01 AM

Air Quality

See More
Air Quality Excellent

The air quality is ideal for most individuals; enjoy your normal outdoor activities.

Allergy Outlook

See All
Tree Pollen Moderate Data is not supported in this location Ragweed Pollen Low Data is not supported in this location Mold Low Data is not supported in this location Grass Pollen Low Data is not supported in this location Dust & Dander Low Data is not supported in this location

Top Stories

Winter Weather

More wintry trouble ahead for Upper Midwest, interior Northeast

2 hours ago

Winter Weather

Early 2026 rain, mountain snow to expand in California and western US

2 hours ago

Winter Weather

80 inches of snow in Juneau, Alaska smashes record, sinks boats

2 days ago

Weather Forecasts

After a frigid December, a warmup awaits the Midwest and Northeast

3 hours ago

Winter Weather

Storm to quench southeast US, with a wintry twist for Virginia

2 hours ago

More Stories

Featured Stories

Weather News

Suspected mountain lion attack in Colorado leaves woman dead

8 hours ago

Astronomy

1st meteor shower of 2026 to peak this weekend

6 hours ago

Travel

Ocean Infinity resumes search for Malaysia Airlines Flight 370

8 hours ago

Astronomy

Top rocket launches of 2025 you had to see to believe

2 days ago

Astronomy

Full moons and supermoons in 2026: Every date to know

1 day ago

World North America United States California Port Costa

Weather Near Port Costa:

  • 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 RealFeel® and RealFeel Shade™ 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 RealFeel® and RealFeel Shade™ 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

...

...

...