• Today

    Oct 24

    73°Lo 59°

    Mostly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      73°
    • UV
      4 - Moderate
    • Air Qual.
      Good
  • Sat

    Oct 25

    69°Lo 53°

    Mostly cloudy, showers around

    Beneficial weather for asthma
    • Hi
      RealFeel
      66°
    • UV
      2 - Low
    • Air Qual.
      Good
    more
  • Sun

    Oct 26

    69°Lo 50°

    Times of clouds and sun

    Beneficial weather for asthma
    • Hi
      RealFeel
      66°
    • UV
      4 - Moderate
    • Air Qual.
      Good
    more
  • Mon

    Oct 27

    70°Lo 50°

    Partly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      70°
    • UV
      4 - Moderate
    • Cloud
      Cover
      27%
    more
  • Tue

    Oct 28

    70°Lo 55°

    Partly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      71°
    • UV
      4 - Moderate
    • Cloud
      Cover
      26%
    more
Next Previous
Hi 73° RealFeel® 73° Precipitation 13%

Day

N

E

S

W

  • SW 7 mph
  • Gusts: 13 mph

Mostly sunny

  • Max UV Index: 4 (Moderate)
  • Thunderstorms: 13%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 59° RealFeel® 52° Precipitation 46%

Night

N

E

S

W

  • S 15 mph
  • Gusts: 22 mph

Breezy and mild with increasing clouds; a shower in spots toward dawn

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 0.03 in
  • Rain: 0.03 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs

Temperature History - Oct 24

more Historical Weather Data >
  Today Normal Record 10/24/2013
High 73° N/A N/A 62°
Low 59° N/A N/A 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:25 AM with 10:54 of sunlight, then sets at 6:19 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:09 AM with 10:55 of moolight, then sets at 7:04 PM

Castro Valley Weather Report

Rain Heads to San Francisco for World Series Game Four

October 24, 2014; 4:35 AM ET

Rain is expected to make a return to the Bay Area by the weekend, just in time for game 4 of the World Series. more >

The Dangers of Bus Travel

Dec 10, 2012; 5:00 AM ET While bus transportation is one of the most affordable, it is important to know which motor coach companies rank highest in safety.

Fri. Air Quality

Fri. Asthma Risk

Fri. UV Index