• Today

    Sep 18

    76°Lo 62°

    Variable clouds with a shower

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
  • Fri

    Sep 19

    73°Lo 61°

    Low clouds followed by sun

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Sat

    Sep 20

    72°Lo 60°

    Plenty of sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Sun

    Sep 21

    72°Lo 60°

    Areas of low clouds, then sun

    Low ragweed pollen levels
    • Precip
      0%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      47%
    more
  • Mon

    Sep 22

    72°Lo 60°

    Mostly sunny

    Ragweed Pollen Weather
    • Precip
      1%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      18%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
8am
9am 10am 11am 12pm 1pm 2pm 3pm
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Forecast
Cloudy
Cloudy
Cloudy
Cloudy
Mostly Cloudy
Showers
Partly Cloudy
Partly Cloudy
Temp (°F) 67° 68° 69° 71° 73° 74° 75° 76°
RealFeel® 63° 65° 67° 70° 73° 75° 75° 76°
Humidity 87% 85% 81% 77% 74% 70% 66% 65%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Rain
 
9%
 
9%
 
13%
 
43%
 
47%
 
51%
 
38%
 
32%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Wind (mph) 7 S 7 S 8 S 7 S 8 SSW 9 SW 10 SW 9 WSW
UV Index 0 1 1 2 3 4 4 4
Cloud Cover 100% 100% 100% 95% 83% 72% 65% 63%
Dew Point 63° 63° 63° 63° 64° 64° 63° 63°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 76° 74° 93° (2009) 78°
Low 62° 56° 46° (1955) 54°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:54 AM with 12:19 of sunlight, then sets at 7:13 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:55 AM with 14:08 of moolight, then sets at 4:03 PM

Top Story

San Bruno Weather Report

San Francisco: Sunshine, Seasonable Temperatures to Continue

September 18, 2014; 6:37 AM ET

The Bay Area will continue to feature sunshine and seasonable temperatures as the summer season comes to a close. more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps