• Tonight

    Jul 31

    Lo 63°

    Increasing cloudiness

    Migraine Headache Weather
    • Hi
      RealFeel
      80°
    • UV
      5 - High
    • Cloud
      Cover
      60%
    more
  • Sat

    Aug 1

    78°Lo 63°

    Low clouds, then some sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      81°
    • UV
      7 - Very High
    • Cloud
      Cover
      60%
    more
  • Sun

    Aug 2

    76°Lo 62°

    Low clouds, then sunshine

    Beneficial weather for migraines
    • Hi
      RealFeel
      79°
    • UV
      7 - Very High
    • Cloud
      Cover
      53%
    more
  • Mon

    Aug 3

    76°Lo 61°

    Low clouds, then sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      78°
    • UV
      7 - Very High
    • Cloud
      Cover
      59%
  • Tue

    Aug 4

    75°Lo 58°

    Low clouds, then sunshine

    Beneficial weather for migraines
    • Hi
      RealFeel
      79°
    • UV
      7 - Very High
    • Cloud
      Cover
      60%
    more
Next Previous
Hi 76° RealFeel® 78° Precipitation 0%

Day

N

E

S

W

  • WSW 12 mph
  • Gusts: 22 mph

Low clouds giving way to sunshine

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 61° RealFeel® 59° Precipitation 0%

Night

N

E

S

W

  • WSW 7 mph
  • Gusts: 17 mph

Rather cloudy

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Aug 3

more Historical Weather Data >
  Today Normal Record 8/3/2014
High 76° N/A N/A 69°
Low 61° N/A N/A 61°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:13 AM with 14:01 of sunlight, then sets at 8:14 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:28 PM with 12:42 of moolight, then sets at 11:10 AM

Union City Weather Report

San Francisco: Dry Weather Continues in the Bay Area

July 31, 2015; 4:41 PM ET

The only fly in the ointment in the forecast will be low morning clouds which may cause travel delays at San Francisco International Airport. more >

Mon. Migraine Headache

Mon. UV Index