• Today

    Aug 27

    82°Lo 54°

    Mostly sunny

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

    Aug 28

    80°Lo 55°

    Plenty of sunshine

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

    Aug 29

    78°Lo 55°

    Partly sunny

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

    Aug 30

    81°Lo 56°

    Low clouds, then some sun

    Low ragweed pollen levels
    • Precip
      0%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      60%
    more
  • Sun

    Aug 31

    82°Lo 55°

    Partly sunny

    Ragweed Pollen Weather
    • Precip
      1%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      26%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
8am
9am 10am 11am 12pm 1pm 2pm 3pm
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Forecast
Partly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 58° 61° 64° 68° 73° 77° 82° 80°
RealFeel® 58° 63° 70° 74° 80° 82° 86° 83°
Humidity 91% 83% 73% 65% 58% 51% 42% 45%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
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) 4 WNW 4 WNW 4 W 4 W 4 WSW 5 SW 6 SW 6 SW
UV Index 1 2 4 5 6 6 6 5
Cloud Cover 31% 28% 28% 25% 25% 25% 11% 11%
Dew Point 55° 56° 55° 56° 57° 57° 57° 56°
Middle Grid line 85 F 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

Temperature History - Aug 27

more Historical Weather Data >
  Today Normal Record 8/27/2013
High 82° 82° N/A 79°
Low 54° 53° N/A 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:36 AM with 13:12 of sunlight, then sets at 7:48 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:35 AM with 12:10 of moolight, then sets at 8:45 PM

Top Story

Petaluma Weather Report

PHOTOS: Magnitude 6.0 Earthquake Strikes Near San Francisco

August 27, 2014; 4:39 AM ET

More than 200 people were injured, including three critically, after a 6.0-magnitude earthquake rocked the San Francisco Bay area on Sunday morning. more >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps