• Today

    Apr 20

    76°Lo 50°

    Sunshine and pleasant

    Beneficial weather for migraines
    • Hi
      RealFeel
      79°
    • UV
      8 - Very High
    • Cloud
      Cover
      9%
  • Mon

    Apr 21

    65°Lo 51°

    Partly sunny and not as warm

    Beneficial weather for migraines
    • Hi
      RealFeel
      68°
    • UV
      6 - High
    • Cloud
      Cover
      67%
    more
  • Tue

    Apr 22

    62°Lo 45°

    Mostly cloudy with a shower

    Beneficial weather for migraines
    • Hi
      RealFeel
      62°
    • UV
      6 - High
    • Cloud
      Cover
      76%
    more
  • Wed

    Apr 23

    66°Lo 51°

    Mostly sunny and cool

    Beneficial weather for migraines
    • Hi
      RealFeel
      67°
    • UV
      8 - Very High
    • Cloud
      Cover
      12%
    more
  • Thu

    Apr 24

    69°Lo 52°

    Periods of sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      72°
    • UV
      7 - High
    • Cloud
      Cover
      46%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
8pm
9pm 10pm 11pm Mon
12am
1am 2am 3am
  8pm 9pm 10pm 11pm 12am 1am 2am 3am
Forecast
Clear
Clear
Mostly Clear
Mostly Clear
Clear
Clear
Mostly Clear
Partly Cloudy
Temp (°F) 63° 60° 59° 58° 56° 55° 54° 52°
RealFeel® 60° 58° 57° 56° 54° 54° 53° 52°
Humidity 61% 66% 69% 73% 76% 78% 80% 82%
   
  8pm 9pm 10pm 11pm 12am 1am 2am 3am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
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0%
Ice
 
0%
 
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  8pm 9pm 10pm 11pm 12am 1am 2am 3am
Wind (mph) 6 NW 5 NW 4 NW 3 NW 3 WNW 2 WNW 2 WNW 2 WNW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 4% 7% 10% 10% 4% 1% 10% 35%
Dew Point 50° 49° 49° 49° 48° 48° 48° 47°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F

Temperature History - Apr 20

more Historical Weather Data >
  Today Normal Record 4/20/2013
High 76° 70° N/A 81°
Low 50° 45° N/A 48°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:27 AM with 13:21 of sunlight, then sets at 7:48 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:30 AM with 10:25 of moolight, then sets at 10:55 AM

Top Story

Los Altos Weather Report

Chance of Rain in San Francisco on Tuesday

April 20, 2014; 3:10 PM ET

There hasn't been any measurable precipitation in San Francisco since April 4. more >

Is it a Cold or the Flu?

Apr 19, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Sun. Migraine Headache

Sun. UV Index