• Tonight

    Feb 27

    Lo 52°

    A brief shower or two

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Sat

    Feb 28

    61°Lo 48°

    Variably cloudy, a t-storm

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Sun

    Mar 1

    63°Lo 48°

    Partly sunny

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Mon

    Mar 2

    62°Lo 46°

    A brief shower or two

    Low ragweed pollen levels
    • Precip
      56%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      78%
    more
  • Tue

    Mar 3

    62°Lo 45°

    Mostly sunny

    Ragweed Pollen Weather
    • Precip
      8%
    • Wind
      Speed
      10 mph
    • Cloud
      Cover
      11%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
10pm
11pm Sat
12am
1am 2am 3am 4am 5am
  10pm 11pm 12am 1am 2am 3am 4am 5am
Forecast
Partly Cloudy
Showers
Cloudy
Cloudy
Showers
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Temp (°F) 54° 54° 54° 54° 53° 53° 52° 52°
RealFeel® 46° 44° 46° 45° 43° 45° 45° 46°
Humidity 80% 79% 79% 79% 79% 79% 79% 78%
   
  10pm 11pm 12am 1am 2am 3am 4am 5am
Rain
 
47%
 
51%
 
47%
 
47%
 
51%
 
47%
 
43%
 
47%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  10pm 11pm 12am 1am 2am 3am 4am 5am
Wind (mph) 17 WNW 16 WNW 15 WNW 17 WNW 16 WNW 15 WNW 14 WNW 12 WNW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 44% 49% 57% 65% 73% 76% 76% 76%
Dew Point 48° 48° 48° 47° 47° 46° 46° 46°
Middle Grid line 55 F Middle Grid line 50 F

Temperature History - Feb 27

more Historical Weather Data >
  Today Normal Record 2/27/2014
High 61° 61° 75° (1992) 65°
Low 52° 47° 32° (1951) 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:44 AM with 11:17 of sunlight, then sets at 6:01 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:00 PM with 14:23 of moolight, then sets at 3:23 AM

San Bruno Weather Report

Western Storm to Deliver Fraction of Much-Needed Rain, Snow

February 27, 2015; 11:23 PM ET

A slow-moving storm will continue to affect the West this weekend and into the first part of next week with rounds of precipitation for some needy areas as well as trouble for travelers. more >

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps