• Early AM

    Apr 19

    Lo 49°

    Low clouds

    Morning School Bus Weather
    • T-storms
      0%
    • Precip
      0%
    • Wind
      Gust
      13 mph
    more
  • Today

    Apr 19

    67°Lo 50°

    Mostly sunny

    Excellent at the bus stop
    • T-storms
      1%
    • Precip
      1%
    • Wind
      Gust
      15 mph
  • Sun

    Apr 20

    72°Lo 50°

    Partly sunny

    Excellent at the bus stop
    • T-storms
      1%
    • Precip
      1%
    • Wind
      Gust
      13 mph
    more
  • Mon

    Apr 21

    65°Lo 52°

    Times of sun and clouds

    Excellent at the bus stop
    • T-storms
      7%
    • Precip
      25%
    • Wind
      Gust
      15 mph
    more
  • Tue

    Apr 22

    60°Lo 48°

    Rather cloudy with a shower

    Good at the bus stop
    • T-storms
      20%
    • Precip
      55%
    • Wind
      Gust
      25 mph
    more
Next Previous
Hi 67° RealFeel® 68° Precipitation 1%

Day

N

E

S

W

  • W 9 mph
  • Gusts: 15 mph

Mostly sunny

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 50° RealFeel® 49° Precipitation 1%

Night

N

E

S

W

  • NW 4 mph
  • Gusts: 11 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 - Apr 19

more Historical Weather Data >
  Today Normal Record 4/19/2013
High 67° N/A N/A 75°
Low 50° N/A N/A 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:28 AM with 13:20 of sunlight, then sets at 7:48 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at --:-- with of moolight, then sets at 9:54 AM

Top Story

Castro Valley Weather Report

San Francisco: No Rain in Sight, Morning Clouds to Break for Afternoon Sunshine

April 18, 2014; 2:06 PM ET

Through the holiday weekend, morning clouds will give way to mostly sunny skies. more >

The AccuWeather RealFeel Temperature

May 17, 2012; 5:00 AM ET This product plays a big role as humidity rises.

Sat. Morning Bus Stop

Sat. UV Index

Sat. Wind Maps