url:
Port Costa, California Weather Forecast
Port Costa, California Weather
your sport, your way
Air Sports Net on FacebookAir Sports Net on Google +Air Sports Net on TwitterReceive RSS UpdatesReceive Email Updates

No Watches or Warnings for Port Costa
Change location by the zip code or city,state: or search for other weather forecast locations in California by name.
Weather Forecast for Port Costa, California : Contra Costa County
Issued: 2:37 am PDT Nov 1, 2025 Latitude: 38.0463097 Longitude: -122.1833005 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Sunday Monday Tuesday Wednesday Thursday Friday
Sunny on Today Mostly Clear on Tonight Sunny on Sunday Mostly Sunny on Monday Partly Sunny on Tuesday Rain on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday
High: 75°F Low: 53°F High: 77°F High: 70°F High: 71°F High: 65°F High: 67°F High: 70°F
Low: 52°F Low: 54°F Low: 58°F Low: 54°F Low: 54°F  
Sunny Mostly Clear Sunny Mostly Sunny Partly Sunny Rain Mostly Sunny Mostly Sunny
-
Current Conditions at
CONCORD - (KCCR)
59°
Clear
as of 9:53 AM PDST
Rel. Humidity: 72%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
NAPA - (KAPC)
54°
Cloudy
Fog
as of 9:54 AM PDST
Rel. Humidity: 100%
Dew Point: 54°F
Visibility: 1/4 Miles
Pressure: 30.13 in.
Flight Rule: LIFR
Wind Data
5 MPH
190° South
Cloud Level(s): Solid Overcast at 200ft
Current Conditions at
TRAVIS AFB - (KSUU)
61°
Clear
as of 9:55 AM PDST
Rel. Humidity: 77%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
VACAVILLE - (KVCB)
59°
Clear
as of 9:53 AM PDST
Rel. Humidity: 77%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
3 MPH
020° North
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 75. West wind around 6 mph.

Mostly Clear on Tonight Tonight... Mostly clear, with a low around 53. West southwest wind 3 to 6 mph.

Sunny on Sunday Sunday... Sunny, with a high near 77. Calm wind becoming west around 5 mph in the afternoon.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 52. West southwest wind around 6 mph.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 70. Southwest wind 6 to 9 mph.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 54.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 71.

20% chance of rain Tuesday Night Tuesday Night... A chance of rain after 11pm. Mostly cloudy, with a low around 58.

Rain on Wednesday Wednesday... Rain. Cloudy, with a high near 65. Breezy.

20% chance of rain Wednesday Night Wednesday Night... A chance of rain before 11pm. Mostly cloudy, with a low around 54.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 67.

10% chance of rain Thursday Night Thursday Night... A slight chance of rain. Partly cloudy, with a low around 54.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 70.

Current Radar Image


Sun Almanac for Port Costa, California
Sunrise: 07:35 AM
Sunset: 6:09 PM
Civil Sunrise:07:08 AM
Civil Sunset: 6:37 PM
Nautical Sunrise: 06:37 AM
Nautical Sunset: 7:08 PM
Astro Sunrise: 06:06 AM
Astro Sunset: 7:39 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.