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: 1:26 am PDT Jul 4, 2025 Latitude: 38.0463097 Longitude: -122.1833005 View on Google Maps

MouseOver for Detail Forecast
Overnight Independence Day Saturday Sunday Monday Tuesday Wednesday Thursday
Mostly Clear on Overnight Sunny on Independence Day Sunny on Saturday Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday Sunny on Wednesday Sunny on Thursday
Low: 54°F High: 73°F High: 77°F High: 76°F High: 75°F High: 74°F High: 81°F High: 89°F
Low: 52°F Low: 52°F Low: 53°F Low: 55°F Low: 55°F Low: 56°F  
Mostly Clear Sunny Sunny Sunny Sunny Mostly Sunny Sunny Sunny
-
Current Conditions at
CONCORD - (KCCR)
57°
Clear
as of 12:53 AM PDST
Rel. Humidity: 82%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.93 in.
Flight Rule: VFR
Wind Data
18 MPH
190° South
Cloud Level(s): Clear
Current Conditions at
NAPA - (KAPC)
57°
Clear
as of 12:54 AM PDST
Rel. Humidity: 87%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
10 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
TRAVIS AFB - (KSUU)
59°
Clear
as of 12:55 AM PDST
Rel. Humidity: 77%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
23 MPH
230° Southwest
Cloud Level(s): Clear
Current Conditions at
VACAVILLE - (KVCB)
66°
Clear
as of 12:53 AM PDST
Rel. Humidity: 48%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: VFR
Wind Data
5 MPH
100° East
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 54. West southwest wind 18 to 20 mph, with gusts as high as 26 mph.
Sunny on Independence Day Independence Day... Sunny, with a high near 73. West southwest wind 17 to 20 mph, with gusts as high as 24 mph.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 52. Southwest wind 13 to 18 mph, with gusts as high as 24 mph.
Sunny on Saturday Saturday... Sunny, with a high near 77. Southwest wind 10 to 13 mph, with gusts as high as 18 mph.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 52. Southwest wind around 15 mph, with gusts as high as 21 mph.
Sunny on Sunday Sunday... Sunny, with a high near 76.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 53.
Sunny on Monday Monday... Sunny, with a high near 75.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 55.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 74.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 55.
Sunny on Wednesday Wednesday... Sunny, with a high near 81.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 56.
Sunny on Thursday Thursday... Sunny, with a high near 89.
Current Radar Image


Sun Almanac for Port Costa, California
Sunrise: 05:52 AM
Sunset: 8:35 PM
Civil Sunrise:05:20 AM
Civil Sunset: 9:06 PM
Nautical Sunrise: 04:41 AM
Nautical Sunset: 9:45 PM
Astro Sunrise: 03:57 AM
Astro Sunset: 10:29 PM
California's Current Temperatures
California's Current Temperature Map

California's Satellite ImageCalifornia Satellite Image

California's Current Wind DirectionCalifornia's Current Wind Direction

National Summary
of upper and lower values of current conditions amongst 7025 locations
in the contiguous United States
High
Temp		 91° Lake Havasu City, Arizona
and 1 other location
Low
Temp		 41° Bryce Canyon, Utah
and 1 other location
Wind
Speed		 33mph Byron, California
Wind
Gust		 41mph Byron, California
Wind
Chill		 34° Salida Mountain, Colorado
and 1 other location
Heat
Index		 94° Garden Banks172, Louisiana
and 1 other location
High
Pressure		 30.59Hg Salida Mountain, Colorado
Low
Pressure		 29.61Hg Grand Forks AFB, North Dakota
# Locations Reporting Snow 1
# Locations Reporting Rain 47
# Locations Reporting Thunderstorms / Lightning 17
# Locations Reporting Fog 15
Average Temperature in the Contiguous USA 69°
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.