• Today

    Apr 17

    68°Lo 50°

    Low clouds breaking

    Poor for home energy
    • Avg
      RealFeel
      61°
    • Hi
      RealFeel
      69°
    • Wind
      Speed
      10 mph
    more
  • Fri

    Apr 18

    65°Lo 49°

    Low clouds, then some sun

    Poor for home energy
    • Avg
      RealFeel
      58°
    • Hi
      RealFeel
      67°
    • Wind
      Speed
      10 mph
  • Sat

    Apr 19

    64°Lo 50°

    Mostly sunny

    Poor for home energy
    • Avg
      RealFeel
      59°
    • Hi
      RealFeel
      67°
    • Wind
      Speed
      9 mph
    more
  • Sun

    Apr 20

    67°Lo 51°

    Clouds giving way to some sun

    Poor for home energy
    • Avg
      RealFeel
      58°
    • Hi
      RealFeel
      67°
    • Wind
      Speed
      10 mph
    more
  • Mon

    Apr 21

    64°Lo 50°

    Low clouds, then some sun

    Poor for home energy
    • Avg
      RealFeel
      58°
    • Hi
      RealFeel
      64°
    • Wind
      Speed
      9 mph
    more
Next Previous
Hi 65° RealFeel® 67° Precipitation 3%

Day

N

E

S

W

  • WNW 10 mph
  • Gusts: 16 mph

Low clouds followed by some sun

  • Max UV Index: 7 (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 49° RealFeel® 44° Precipitation 1%

Night

N

E

S

W

  • W 7 mph
  • Gusts: 13 mph

Partly cloudy

  • 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 - Apr 18

more Historical Weather Data >
  Today Normal Record 4/18/2013
High 65° 67° N/A 74°
Low 49° 47° N/A 47°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:30 AM with 13:17 of sunlight, then sets at 7:47 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:36 PM with 10:20 of moolight, then sets at 9:56 AM

Top Story

San Mateo Weather Report

San Francisco: No Rain in Sight, Morning Clouds to Break for Afternoon Sunshine

April 17, 2014; 4:46 AM ET

For the remainder of the week and into the weekend, morning clouds will give way to mostly sunny skies. more >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Fri. Home Energy Efficiency

Fri. Degree Days

Fri. UV Index