• Tonight

    May 4

    Lo 55°

    Mostly cloudy with a shower

    Migraine Headache Weather
    • Hi
      RealFeel
      74°
    • UV
      4 - Moderate
    • Cloud
      Cover
      92%
  • Thu

    May 5

    67°Lo 55°

    Thundershower

    Beneficial weather for migraines
    • Hi
      RealFeel
      75°
    • UV
      5 - High
    • Cloud
      Cover
      71%
    more
  • Fri

    May 6

    66°Lo 53°

    Clouds and sun with a t-storm

    Beneficial weather for migraines
    • Hi
      RealFeel
      71°
    • UV
      4 - Moderate
    • Cloud
      Cover
      70%
    more
  • Sat

    May 7

    69°Lo 54°

    Periods of sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      77°
    • UV
      5 - High
    • Cloud
      Cover
      70%
    more
  • Sun

    May 8

    70°Lo 52°

    Partial sunshine

    Beneficial weather for migraines
    • Hi
      RealFeel
      78°
    • UV
      5 - High
    • Cloud
      Cover
      45%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
3pm
4pm 5pm 6pm 7pm 8pm 9pm 10pm
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Forecast
Cloudy
Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Showers
Mostly Cloudy
Mostly Cloudy
Temp (°F) 70° 69° 67° 66° 64° 63° 61° 60°
RealFeel® 72° 70° 66° 64° 61° 59° 60° 59°
Humidity 35% 40% 53% 57% 64% 69% 71% 73%
   
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Rain
 
1%
 
1%
 
0%
 
0%
 
3%
 
51%
 
47%
 
34%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Wind (mph) 10 NNW 12 NNW 12 NNW 10 NNW 10 NW 7 NW 6 WNW 6 W
UV Index 4 3 2 1 0 0 0 0
Cloud Cover 93% 93% 82% 76% 89% 100% 88% 78%
Dew Point 41° 44° 50° 50° 51° 52° 52° 52°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - May 4

more Historical Weather Data >
  Today Normal Record 5/4/2015
High 70° 72° N/A 65°
Low 55° 47° N/A 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:09 AM with 13:53 of sunlight, then sets at 8:02 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:55 AM with 12:53 of moolight, then sets at 5:48 PM

Los Altos Weather Report

San Francisco: Showery weather to arrive by late week

May 4, 2016; 12:34 PM ET

Clouds and showers will move into the Bay Area following a dry start to May. more >

Wed. Migraine Headache

Wed. UV Index