• Early AM

    Mar 6

    Lo 45°

    Clear

    Common Cold Weather
    • Avg
      Temp
      58°
    • Avg
      RealFeel
      61°
    • Hi
      RealFeel
      75°
    more
  • Today

    Mar 6

    71°Lo 45°

    Plenty of sun

    Beneficial weather for colds
    • Avg
      Temp
      58°
    • Avg
      RealFeel
      61°
    • Hi
      RealFeel
      75°
  • Sat

    Mar 7

    71°Lo 46°

    Mostly sunny

    Beneficial weather for colds
    • Avg
      Temp
      59°
    • Avg
      RealFeel
      61°
    • Hi
      RealFeel
      74°
    more
  • Sun

    Mar 8

    70°Lo 46°

    Mostly sunny and pleasant

    Beneficial weather for colds
    • Avg
      Temp
      58°
    • Avg
      RealFeel
      61°
    • Hi
      RealFeel
      74°
    more
  • Mon

    Mar 9

    72°Lo 48°

    Mostly sunny and pleasant

    Beneficial weather for colds
    • Avg
      Temp
      60°
    • Avg
      RealFeel
      62°
    • Hi
      RealFeel
      75°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Clear
Clear
Clear
Clear
Sunny
Sunny
Sunny
Sunny
Temp (°F) 46° 45° 48° 52° 47° 51° 55° 61°
RealFeel® 47° 46° 49° 53° 49° 54° 62° 69°
Humidity 73% 75% 66% 54% 67% 63% 57% 52%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 4 E 4 E 4 E 4 ENE 2 NE 2 NE 2 NNE 4 N
UV Index 0 0 0 0 0 1 2 4
Cloud Cover 0% 0% 0% 0% 0% 0% 0% 0%
Dew Point 38° 38° 37° 36° 37° 39° 41° 43°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F

Temperature History - Mar 6

more Historical Weather Data >
  Today Normal Record 3/6/2014
High 71° N/A N/A 63°
Low 45° N/A N/A 56°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:33 AM with 11:34 of sunlight, then sets at 6:07 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:18 PM with 12:06 of moolight, then sets at 7:24 AM

Castro Valley Weather Report

San Francisco: Dry Pattern, Warmth to Continue Through Weekend

March 6, 2015; 4:50 AM ET

Above-average temperatures and clear, sunny skies will sweep across San Francisco throughout the rest of the week and into early next week. more >

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Fri. Cold & Flu

Fri. UV Index