• Today

    Sep 1

    86°Lo 56°

    Plenty of sunshine

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

    Sep 2

    77°Lo 56°

    Low clouds, then sunshine

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

    Sep 3

    77°Lo 56°

    Low clouds followed by sun

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

    Sep 4

    77°Lo 54°

    Partly sunny and cool

    Low ragweed pollen levels
    • Precip
      2%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      26%
    more
  • Fri

    Sep 5

    77°Lo 53°

    Mostly sunny and cool

    Ragweed Pollen Weather
    • Precip
      1%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      18%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
5am
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  5am 6am 7am 8am 9am 10am 11am 12pm
Forecast
Clear
Clear
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Temp (°F) 55° 54° 56° 62° 65° 68° 72° 77°
RealFeel® 55° 54° 56° 63° 66° 72° 78° 83°
Humidity 94% 97% 92% 78% 72% 64% 56% 50%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Rain
 
0%
 
0%
 
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0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
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Ice
 
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  5am 6am 7am 8am 9am 10am 11am 12pm
Wind (mph) 1 WSW 1 WSW 1 WSW 2 WSW 2 W 3 WSW 3 SW 4 SW
UV Index 0 0 0 1 2 3 5 6
Cloud Cover 1% 3% 4% 7% 8% 9% 0% 0%
Dew Point 53° 53° 54° 55° 56° 56° 56° 57°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2013
High 86° 86° N/A 75°
Low 56° 52° N/A 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:38 AM with 13:01 of sunlight, then sets at 7:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:24 PM with 10:25 of moolight, then sets at 11:49 PM

Top Story

Napa Weather Report

San Francisco: Bright, Sunny for First Week of September

September 1, 2014; 1:53 AM ET

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

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps