• Tonight

    Aug 31

    Lo 59°

    Partly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Tue

    Sep 1

    81°Lo 60°

    Nice with plenty of sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Wed

    Sep 2

    79°Lo 57°

    Partly sunny

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Thu

    Sep 3

    78°Lo 53°

    Mostly sunny and nice

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Fri

    Sep 4

    84°Lo 53°

    Areas of low clouds, then sun

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
9pm
10pm 11pm Tue
12am
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  9pm 10pm 11pm 12am 1am 2am 3am 4am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Cloudy
Cloudy
Cloudy
Temp (°F) 71° 68° 65° 62° 62° 62° 62° 60°
RealFeel® 67° 65° 63° 61° 60° 61° 60° 59°
Humidity 46% 56% 64% 68% 74% 74% 75% 80%
   
  9pm 10pm 11pm 12am 1am 2am 3am 4am
Rain
 
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Snow
 
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Ice
 
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  9pm 10pm 11pm 12am 1am 2am 3am 4am
Wind (mph) 9 W 8 WSW 7 WSW 6 WSW 7 WSW 7 WSW 6 SW 6 SW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 14% 11% 25% 25% 25% 90% 90% 90%
Dew Point 49° 51° 52° 52° 53° 54° 54° 54°
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

Temperature History - Aug 31

more Historical Weather Data >
  Today Normal Record 8/31/2014
High 87° N/A N/A 90°
Low 59° N/A N/A 60°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:37 AM with 13:02 of sunlight, then sets at 7:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:03 PM with 12:59 of moolight, then sets at 10:02 AM

Clayton Weather Report

San Francisco: Dry, Pleasant Conditions to Span Week

August 31, 2015; 3:48 PM ET

The San Francisco area will have dry and seasonable conditions throughout the week. more >

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps