• Early AM

    Sep 1

    Lo 56°

    Increasing clouds

    Running Weather
    • Precip
      0%
    • Hours of Precip
      0
    • Wind
      Gust
      14 mph
    more
  • Today

    Sep 1

    78°Lo 56°

    Partly sunny

    Excellent for running
    • Precip
      4%
    • Hours of Precip
      0
    • Wind
      Gust
      15 mph
    more
  • Wed

    Sep 2

    76°Lo 53°

    Areas of low clouds, then sun

    Excellent for running
    • Precip
      3%
    • Hours of Precip
      0
    • Wind
      Gust
      17 mph
  • Thu

    Sep 3

    77°Lo 48°

    Areas of low clouds, then sun

    Excellent for running
    • Precip
      10%
    • Hours of Precip
      0
    • Wind
      Gust
      12 mph
    more
  • Fri

    Sep 4

    77°Lo 51°

    Areas of low clouds, then sun

    Excellent for running
    • Precip
      3%
    • Hours of Precip
      0
    • Wind
      Gust
      17 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
5am
6am 7am 8am 9am 10am 11am 12pm
  5am 6am 7am 8am 9am 10am 11am 12pm
Forecast
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Temp (°F) 58° 57° 56° 58° 61° 63° 66° 69°
RealFeel® 54° 54° 53° 56° 60° 64° 67° 72°
Humidity 91% 91% 96% 91% 83% 75% 67% 61%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
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%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Wind (mph) 9 W 8 W 7 W 8 W 8 WSW 8 WSW 9 SW 12 SW
UV Index 0 0 0 0 1 2 3 5
Cloud Cover 76% 76% 76% 76% 76% 76% 76% 76%
Dew Point 55° 55° 55° 56° 56° 55° 55° 56°
Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - Sep 2

more Historical Weather Data >
  Today Normal Record 9/2/2014
High 76° 84° 109° (1955) 78°
Low 53° 54° 41° (1933) 60°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:39 AM with 12:59 of sunlight, then sets at 7:38 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:25 PM with 13:55 of moolight, then sets at 12:20 PM

Napa Weather Report

San Francisco: Dry, Pleasant Conditions to Span Week

September 1, 2015; 1:48 AM ET

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

Avoid the Winter Workout Blues

Dec 26, 2012; 5:00 AM ET When it's snowing or cold, most of us want nothing more than to keep warm on the couch. But Violeta Yas has some tips to help you sneak in mini workouts at the office, regardless of the weather.