• Tonight

    Jul 30

    Lo 53°

    Low clouds, fog forming

    Running Weather
    • Precip
      1%
    • Hours of Precip
      0
    • Wind
      Gust
      23 mph
    more
  • Sun

    Jul 31

    84°Lo 53°

    Plenty of sunshine

    Excellent for running
    • Precip
      6%
    • Hours of Precip
      0
    • Wind
      Gust
      15 mph
  • Mon

    Aug 1

    85°Lo 52°

    Plenty of sunshine

    Excellent for running
    • Precip
      2%
    • Hours of Precip
      0
    • Wind
      Gust
      15 mph
    more
  • Tue

    Aug 2

    87°Lo 54°

    Mostly sunny

    Excellent for running
    • Precip
      2%
    • Hours of Precip
      0
    • Wind
      Gust
      12 mph
    more
  • Wed

    Aug 3

    88°Lo 52°

    Warm with plenty of sun

    Very Good for running
    • Precip
      1%
    • Hours of Precip
      0
    • Wind
      Gust
      12 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
1am
2am 3am 4am 5am 6am 7am 8am
  1am 2am 3am 4am 5am 6am 7am 8am
Forecast
Mostly Clear
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Sunny
Temp (°F) 58° 57° 56° 55° 54° 53° 54° 58°
RealFeel® 57° 56° 54° 53° 52° 51° 53° 59°
Humidity 79% 82% 84% 86% 92% 93% 93% 82%
   
  1am 2am 3am 4am 5am 6am 7am 8am
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%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Wind (mph) 6 SW 6 W 6 W 6 W 6 W 6 W 6 W 6 W
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 25% 76% 76% 76% 76% 76% 76% 10%
Dew Point 51° 52° 51° 51° 51° 51° 52° 53°
Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2015
High 84° 86° N/A 76°
Low 53° 52° N/A 59°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:11 AM with 14:08 of sunlight, then sets at 8:19 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:04 AM with 14:33 of moolight, then sets at 6:37 PM

Napa Weather Report

Western US: Diminishing heat to aid in firefighting efforts next week

July 30, 2016; 4:48 PM ET

As several large fires continue to rage across the western United States, weather conditions will gradually improve for firefighting efforts in the upcoming 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.