• Early AM

    May 23

    Lo 54°

    Mostly cloudy

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      64°
    • Hi
      RealFeel
      76°
    • Wind
      Speed
      8 mph
    more
  • Today

    May 23

    75°Lo 52°

    Partly sunny and nice

    Poor for home energy
    • Avg
      RealFeel
      65°
    • Hi
      RealFeel
      79°
    • Wind
      Speed
      8 mph
  • Sun

    May 24

    80°Lo 54°

    Partly sunny

    Poor for home energy
    • Avg
      RealFeel
      68°
    • Hi
      RealFeel
      82°
    • Wind
      Speed
      8 mph
    more
  • Mon

    May 25

    79°Lo 54°

    Mostly sunny

    Poor for home energy
    • Avg
      RealFeel
      68°
    • Hi
      RealFeel
      83°
    • Wind
      Speed
      9 mph
    more
  • Tue

    May 26

    79°Lo 54°

    Sunshine and patchy clouds

    Poor for home energy
    • Avg
      RealFeel
      68°
    • Hi
      RealFeel
      83°
    • Wind
      Speed
      8 mph
    more
Next Previous
Hi 75° RealFeel® 79° Precipitation 5%

Day

N

E

S

W

  • W 8 mph
  • Gusts: 18 mph

Partly sunny and nice

  • 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 52° RealFeel® 51° Precipitation 5%

Night

N

E

S

W

  • W 7 mph
  • Gusts: 17 mph

Partly 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 - May 23

more Historical Weather Data >
  Today Normal Record 5/23/2014
High 75° N/A N/A 91°
Low 52° N/A N/A 59°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:51 AM with 14:24 of sunlight, then sets at 8:15 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:11 AM with 14:03 of moolight, then sets at 12:14 AM

Tracy Weather Report

San Francisco: Cool, Cloudy Weather to Linger for Holiday Weekend

May 23, 2015; 3:17 AM ET

More clouds and cooler weather can be expected across the Bay Area through the holiday weekend and into the new week. more >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Sat. Home Energy Efficiency

Sat. Degree Days

Sat. UV Index