• Today

    Feb 7

    68°Lo 47°

    Sunny and warmer

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Mon

    Feb 8

    70°Lo 47°

    Plenty of sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Tue

    Feb 9

    70°Lo 46°

    Plenty of sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Wed

    Feb 10

    68°Lo 47°

    Partly sunny

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Thu

    Feb 11

    68°Lo 48°

    Partly sunny

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Clear 46° RealFeel® 50°

N

E

S

W

  • Humidity: 79%
  • Pressure: 30.30 in
  • UV Index: 0
  • Cloud Cover: 0%
  • Ceiling: 40000 ft
  • Dew Point: 40° F
  • Visibility: 10 mi
0 mph

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:07 AM with 10:32 of sunlight, then sets at 5:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:14 AM with 10:49 of moolight, then sets at 5:03 PM

Temperature Summary - 5:51 AM

  Temp (°F)
Now 46°
Yesterday 48°
RealFeel® 50°
RealFeel® Shade 50°
Wind Chill 46°
Dew Point 40°
  Hi / Lo
Previous 6 Hours 53°
  46°
Previous 12 Hours 62°
  46°
Previous 24 Hours 62°
  44°

Temperature History - Feb 7

more Historical Weather Data >
  Today Normal Record 2/7/2015
High 68° 60° N/A 62°
Low 47° 44° N/A 56°

Precipitation Summary - 5:51 AM

  Amount (in)
Previous 1 Hour 0
Previous 3 Hours 0
Previous 6 Hours 0
Previous 9 Hours 0
Previous 12 Hours 0
Previous 18 Hours 0
Previous 24 Hours 0

Castro Valley Weather Report

Super Bowl Sunday: Break in wet El Nino-driven weather pattern to arrive in time for big game

February 7, 2016; 7:56 AM ET

Dry conditions and above-normal temperatures are expected for Super Bowl Sunday in Santa Clara, California. more >

Health Weather

Jan 19, 2016; 10:05 AM ET How the weather impacts people's health

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps