• Today

    May 27

    81°Lo 52°

    Mostly sunny and pleasant

    Beneficial weather for asthma
    • Hi
      RealFeel
      83°
    • UV
      7 - Very High
    • Air Qual.
      Good
  • Sat

    May 28

    82°Lo 54°

    A full day of sunshine

    Beneficial weather for asthma
    • Hi
      RealFeel
      87°
    • UV
      7 - Very High
    • Air Qual.
      Good
    more
  • Sun

    May 29

    78°Lo 53°

    Sunny much of the time

    Beneficial weather for asthma
    • Hi
      RealFeel
      84°
    • UV
      7 - Very High
    • Air Qual.
      Good
    more
  • Mon

    May 30

    82°Lo 53°

    Mostly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      88°
    • UV
      7 - Very High
    • Air Qual.
      Good
    more
  • Tue

    May 31

    83°Lo 54°

    Sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      89°
    • UV
      7 - Very High
    • Air Qual.
      Good
    more
Next Previous
Next 8 hours >
  Fri
12am
1am 2am 3am 4am 5am 6am 7am
  12am 1am 2am 3am 4am 5am 6am 7am
Forecast
Cloudy
Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Mostly Sunny
Mostly Sunny
Temp (°F) 55° 53° 53° 52° 51° 52° 54° 55°
RealFeel® 53° 53° 54° 53° 52° 53° 55° 57°
Humidity 87% 92% 92% 93% 89% 90% 84% 76%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Rain
 
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Snow
 
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Ice
 
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  12am 1am 2am 3am 4am 5am 6am 7am
Wind (mph) 7 N 5 NNW 2 SSW 2 N 2 N 2 N 2 NNW 2 NW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 61% 61% 86% 86% 86% 46% 26% 26%
Dew Point 51° 51° 51° 50° 48° 49° 49° 48°
Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F

Temperature History - May 27

more Historical Weather Data >
  Today Normal Record 5/27/2015
High 81° 76° N/A 69°
Low 52° 50° N/A 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:51 AM with 14:30 of sunlight, then sets at 8:21 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:17 AM with 10:51 of moolight, then sets at 11:08 AM

Los Altos Weather Report

San Francisco: Milder air to build ahead of Memorial Day weekend

May 27, 2016; 5:12 AM ET

Following a stretch of cool days, milder air will begin to build across the Bay area heading into Memorial Day weekend. more >

Fri. Air Quality

Fri. Asthma Risk

Fri. UV Index