• Today

    Sep 1

    78°Lo 55°

    Decreasing clouds

    Excellent for an outdoor bbq
    • Precip
      1%
    • Hi
      RealFeel
      77°
    • Wind
      Speed
      10 mph
  • Wed

    Sep 2

    77°Lo 53°

    Areas of low clouds, then sun

    Very Good for an outdoor bbq
    • Precip
      9%
    • Hi
      RealFeel
      75°
    • Wind
      Speed
      14 mph
    more
  • Thu

    Sep 3

    77°Lo 49°

    Areas of low clouds, then sun

    Excellent for an outdoor bbq
    • Precip
      5%
    • Hi
      RealFeel
      77°
    • Wind
      Speed
      10 mph
    more
  • Fri

    Sep 4

    78°Lo 50°

    Areas of low clouds, then sun

    Very Good for an outdoor bbq
    • Precip
      3%
    • Hi
      RealFeel
      76°
    • Wind
      Speed
      12 mph
    more
  • Sat

    Sep 5

    81°Lo 51°

    Clouds breaking for sun

    Excellent for an outdoor bbq
    • Precip
      1%
    • Hi
      RealFeel
      81°
    • Wind
      Speed
      9 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
10am
11am 12pm 1pm 2pm 3pm 4pm 5pm
  10am 11am 12pm 1pm 2pm 3pm 4pm 5pm
Forecast
Partly Cloudy
Partly Cloudy
Partly Sunny
Mostly Sunny
Mostly Sunny
Sunny
Sunny
Mostly Sunny
Temp (°F) 67° 69° 71° 73° 75° 77° 78° 76°
RealFeel® 70° 73° 76° 77° 77° 77° 77° 74°
Humidity 71% 67% 63% 60% 57% 55% 52% 54%
   
  10am 11am 12pm 1pm 2pm 3pm 4pm 5pm
Rain
 
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0%
Snow
 
0%
 
0%
 
0%
 
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Ice
 
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  10am 11am 12pm 1pm 2pm 3pm 4pm 5pm
Wind (mph) 5 SW 7 SW 9 SSW 12 SSW 14 SSW 16 SSW 16 S 16 SSW
UV Index 3 4 6 6 6 5 3 2
Cloud Cover 71% 61% 43% 27% 10% 4% 6% 10%
Dew Point 57° 58° 58° 59° 59° 59° 60° 59°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2014
High 78° 84° 107° (1955) 91°
Low 55° 54° 44° (1957) 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:38 AM with 13:01 of sunlight, then sets at 7:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:44 PM with 13:29 of moolight, then sets at 11:13 AM

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 >

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.

Tue. Outdoor Entertaining

Tue. Wind Maps

Tue. UV Index