• Tonight

    May 3

    Lo 50°

    Increasing cloudiness

    Bicycling Weather
    • Precip
      2%
    • Hours of Precip
      0
    • Wind
      Gust
      20 mph
  • Mon

    May 4

    67°Lo 49°

    Areas of low clouds, then sun

    Excellent for biking
    • Precip
      1%
    • Hours of Precip
      0
    • Wind
      Gust
      15 mph
    more
  • Tue

    May 5

    68°Lo 48°

    Mostly sunny and nice

    Excellent for biking
    • Precip
      2%
    • Hours of Precip
      0
    • Wind
      Gust
      20 mph
    more
  • Wed

    May 6

    67°Lo 48°

    Mostly sunny

    Excellent for biking
    • Precip
      6%
    • Hours of Precip
      0
    • Wind
      Gust
      21 mph
    more
  • Thu

    May 7

    68°Lo 50°

    Cloudy to partly sunny

    Very Good for biking
    • Precip
      9%
    • Hours of Precip
      0
    • Wind
      Gust
      23 mph
    more
Next Previous
Hi 69° RealFeel® 75° Precipitation 2%

Day

N

E

S

W

  • N 10 mph
  • Gusts: 20 mph

After a cloudy start, sun returns

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 50° RealFeel® 50° Precipitation 2%

Night

N

E

S

W

  • WSW 6 mph
  • Gusts: 16 mph

Partly cloudy this evening; late-night low clouds

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - May 3

more Historical Weather Data >
  Today Normal Record 5/3/2014
High 69° 72° N/A 70°
Low 50° 47° N/A 56°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:11 AM with 13:49 of sunlight, then sets at 8:00 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:48 PM with 10:55 of moolight, then sets at 6:43 AM

Los Altos Weather Report

San Francisco: Seasonable Temperatures to Continue Through Week

May 4, 2015; 12:19 AM ET

A pattern of seasonable temperatures will continue through the first part of the new week, with low clouds in the morning and sunny conditions through the afternoon. more >

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.