• Today

    Sep 1

    91°Lo 56°

    Plenty of sunshine

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

    Sep 2

    76°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

    78°Lo 53°

    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

    78°Lo 53°

    Partly sunny and cool

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

    Sep 5

    79°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
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  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Forecast
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Clear
Temp (°F) 82° 86° 90° 91° 91° 87° 83° 79°
RealFeel® 85° 89° 90° 89° 88° 83° 78° 74°
Humidity 41% 34% 30% 30% 30% 35% 41% 43%
   
  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Rain
 
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Snow
 
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Ice
 
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  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Wind (mph) 7 SSW 6 WSW 9 SSW 10 SSW 10 SSW 9 SSW 8 SSW 7 SW
UV Index 6 6 5 3 2 1 0 0
Cloud Cover 0% 0% 0% 0% 0% 0% 1% 0%
Dew Point 56° 55° 55° 55° 56° 57° 57° 55°
Middle Grid line 95 F Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2013
High 91° 84° 107° (1955) 84°
Low 56° 54° 44° (1957) 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:39 AM with 13:00 of sunlight, then sets at 7:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:24 PM with 10:26 of moolight, then sets at 11:50 PM

Top Story

Napa Weather Report

San Francisco: Bright, Sunny for First Week of September

September 1, 2014; 9:25 AM ET

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

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps