• Today

    Sep 1

    84°Lo 61°

    Plenty of sun

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

    Sep 2

    76°Lo 60°

    Low clouds, then sunshine

    Excellent for biking
    • Precip
      1%
    • Hours of Precip
      0
    • Wind
      Gust
      12 mph
    more
  • Wed

    Sep 3

    77°Lo 60°

    Clouds, then sun

    Excellent for biking
    • Precip
      1%
    • Hours of Precip
      0
    • Wind
      Gust
      11 mph
    more
  • Thu

    Sep 4

    77°Lo 60°

    Partly sunny

    Excellent for biking
    • Precip
      2%
    • Hours of Precip
      0
    • Wind
      Gust
      12 mph
    more
  • Fri

    Sep 5

    77°Lo 59°

    Mostly sunny and beautiful

    Excellent for biking
    • Precip
      1%
    • Hours of Precip
      0
    • Wind
      Gust
      12 mph
    more
Next Previous
Hi 84° RealFeel® 86° Precipitation 1%

Day

N

E

S

W

  • N 6 mph
  • Gusts: 13 mph

Plenty of sun

  • Max UV Index: 7 (High)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 61° RealFeel® 60° Precipitation 1%

Night

N

E

S

W

  • NNE 3 mph
  • Gusts: 8 mph

Clear and mild

  • 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 - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2013
High 84° 80° N/A 81°
Low 61° 54° N/A 61°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:39 AM with 12:59 of sunlight, then sets at 7:38 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:21 PM with 10:30 of moolight, then sets at 11:51 PM

Top Story

Los Altos Weather Report

San Francisco: Bright, Sunny for First Week of September

September 1, 2014; 9:25 AM ET

San Francisco will see abundant sunshine through at least Thursday. 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.