• Thu

    Aug 20

    77°Lo 60°

    Mostly sunny

    Hair Frizz Weather
    • Wind
      Gust
      20 mph
    • Precip
      2%
    • Hours of Precip
      0
    more
  • Fri

    Aug 21

    68°Lo 60°

    Partly sunny and colder

    Hair Frizz Weather
    • Wind
      Gust
      23 mph
    • Precip
      2%
    • Hours of Precip
      0
    more
  • Sat

    Aug 22

    68°Lo 56°

    Sunshine

    Hair Frizz Weather
    • Wind
      Gust
      24 mph
    • Precip
      0%
    • Hours of Precip
      0
  • Sun

    Aug 23

    68°Lo 57°

    Considerable clouds

    Hair Frizz Weather
    • Wind
      Gust
      22 mph
    • Precip
      2%
    • Hours of Precip
      0
    more
  • Mon

    Aug 24

    68°Lo 60°

    Decreasing clouds

    Hair Frizz Weather
    • Wind
      Gust
      27 mph
    • Precip
      2%
    • Hours of Precip
      0
    more
Next Previous
Hi 68° RealFeel® 73° Precipitation 0%

Day

N

E

S

W

  • WNW 8 mph
  • Gusts: 24 mph

Sunshine

  • 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 56° RealFeel® 54° Precipitation 1%

Night

N

E

S

W

  • WNW 9 mph
  • Gusts: 23 mph

Increasing cloudiness

  • 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 - Aug 22

more Historical Weather Data >
  Today Normal Record 8/22/2014
High 68° 73° 90° (1999) 77°
Low 56° 56° 49° (1955) 59°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:31 AM with 13:22 of sunlight, then sets at 7:53 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:53 PM with 10:36 of moolight, then sets at 12:29 AM

San Bruno Weather Report

The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.