Union, 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 Union
Change location by the zip code or city,state: or search for other weather forecast locations in California by name.
Weather Forecast for Union, California : Napa County
Issued: 1:26 pm PDT Aug 16, 2025 Latitude: 38.3213027 Longitude: -122.3099749 View on Google Maps

MouseOver for Detail Forecast
Tonight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Increasing Clouds on Tonight Partly Sunny on Sunday Partly Sunny on Monday Sunny on Tuesday Sunny on Wednesday Sunny on Thursday Mostly Sunny on Friday Sunny on Saturday
Low: 58°F High: 73°F High: 77°F High: 79°F High: 87°F High: 90°F High: 87°F High: 85°F
Low: 53°F Low: 52°F Low: 55°F Low: 58°F Low: 58°F Low: 58°F  
Increasing Clouds Partly Sunny Partly Sunny Sunny Sunny Sunny Mostly Sunny Sunny
-
Current Conditions at
NAPA - (KAPC)
79°
Clear
as of 4:54 PM PDST
Rel. Humidity: 61%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
18 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
VACAVILLE - (KVCB)
84°
Clear
as of 4:53 PM PDST
Rel. Humidity: 48%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 26 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
TRAVIS AFB - (KSUU)
82°
Clear
as of 4:55 PM PDST
Rel. Humidity: 48%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
22 MPH
Gust: 28 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
CONCORD - (KCCR)
79°
Clear
as of 4:53 PM PDST
Rel. Humidity: 57%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.96 in.
Flight Rule: VFR
Wind Data
17 MPH
180° South
Cloud Level(s): Clear
Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 58. West southwest wind 6 to 11 mph becoming light southwest after midnight. Winds could gust as high as 23 mph.
Partly Sunny on Sunday Sunday... Partly sunny, then gradually becoming sunny, with a high near 73. Light south southwest wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Increasing Clouds on Sunday Night Sunday Night... Increasing clouds, with a low around 53. West southwest wind 5 to 9 mph becoming calm after midnight.
Partly Sunny on Monday Monday... Partly sunny, then gradually becoming sunny, with a high near 77. Calm wind becoming west southwest 5 to 9 mph in the afternoon.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 52. West southwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Sunny on Tuesday Tuesday... Sunny, with a high near 79.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 55.
Sunny on Wednesday Wednesday... Sunny, with a high near 87.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 58.
Sunny on Thursday Thursday... Sunny, with a high near 90.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 58.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 87.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 58.
Sunny on Saturday Saturday... Sunny, with a high near 85.
Current Radar Image


Sun Almanac for Union, California
Sunrise: 06:25 AM
Sunset: 8:01 PM
Civil Sunrise:05:57 AM
Civil Sunset: 8:30 PM
Nautical Sunrise: 05:23 AM
Nautical Sunset: 9:03 PM
Astro Sunrise: 04:48 AM
Astro Sunset: 9:39 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.