• Today

    Sep 18

    87°Lo 60°

    Clouds yielding to sun

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

    Sep 19

    87°Lo 61°

    Mostly sunny

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

    Sep 20

    90°Lo 60°

    Partly sunny

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

    Sep 21

    90°Lo 58°

    Sunny and very warm

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

    Sep 22

    90°Lo 59°

    Sunny and very warm

    Ragweed Pollen Weather
    • Precip
      1%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      0%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
7am
8am 9am 10am 11am 12pm 1pm 2pm
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Forecast
Partly Sunny
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Sunny
Mostly Sunny
Temp (°F) 62° 66° 71° 75° 79° 81° 83° 84°
RealFeel® 60° 63° 69° 75° 81° 85° 88° 89°
Humidity 83% 77% 66% 55% 50% 47% 43% 40%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Rain
 
5%
 
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%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Wind (mph) 3 WNW 4 SSW 4 SSW 6 SW 5 SW 5 WSW 5 WSW 5 W
UV Index 0 0 1 2 4 5 6 6
Cloud Cover 30% 68% 67% 64% 70% 57% 33% 14%
Dew Point 56° 58° 59° 58° 59° 59° 58° 58°
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

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 87° 89° 102° (1984) 86°
Low 60° 59° 44° (1965) 60°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:49 AM with 12:19 of sunlight, then sets at 7:08 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:51 AM with 14:07 of moolight, then sets at 3:58 PM

Top Story

Patterson 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