• Tonight

    Jul 31

    Lo 60°

    Increasing cloudiness

    Stargazing Weather
    • Cloud
      Cover
      54%
    • Precip
      4%
    • Hours of Precip
      0
  • Sat

    Aug 1

    77°Lo 59°

    Low clouds, then some sun

    Fair for stargazing
    • Cloud
      Cover
      62%
    • Precip
      1%
    • Hours of Precip
      0
    more
  • Sun

    Aug 2

    77°Lo 57°

    Low clouds, then sunshine

    Very Good for stargazing
    • Cloud
      Cover
      11%
    • Precip
      2%
    • Hours of Precip
      0
    more
  • Mon

    Aug 3

    77°Lo 53°

    Clouds, then sun

    Poor for stargazing
    • Cloud
      Cover
      70%
    • Precip
      3%
    • Hours of Precip
      0
    more
  • Tue

    Aug 4

    77°Lo 53°

    Low clouds, then sun

    Very Good for stargazing
    • Cloud
      Cover
      22%
    • Precip
      1%
    • Hours of Precip
      0
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
11am
12pm 1pm 2pm 3pm 4pm 5pm 6pm
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Forecast
Sunny
Mostly Sunny
Mostly Sunny
Partly Sunny
Mostly Sunny
Sunny
Mostly Sunny
Sunny
Temp (°F) 68° 73° 76° 72° 73° 79° 76° 72°
RealFeel® 72° 78° 79° 74° 74° 78° 74° 69°
Humidity 70% 59% 53% 63% 63% 52% 46% 55%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
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0%
 
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  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Wind (mph) 10 W 9 WSW 13 SW 17 S 16 S 18 SSW 17 W 17 W
UV Index 6 7 7 7 6 4 3 1
Cloud Cover 0% 25% 25% 35% 25% 0% 25% 0%
Dew Point 58° 58° 58° 59° 60° 60° 54° 55°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2014
High 79° 82° 102° (1993) 84°
Low 60° 55° 41° (1924) 56°

Solunar Information for Napa, CA

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:10 AM with 14:10 of sunlight, then sets at 8:20 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:28 PM with 11:13 of moolight, then sets at 7:41 AM

Fri, Jul 31
Full
Fri, Aug 7
Last
Fri, Aug 14
New
Sat, Aug 22
First

Napa Weather Report

San Francisco: Dry Weather Continues in the Bay Area

August 1, 2015; 1:51 AM ET

The only fly in the ointment in the forecast will be low morning clouds which may cause travel delays at San Francisco International Airport. more >

Curiosity Tastes Mars

Dec 14, 2012; 5:00 AM ET The Mars Science Laboratory Rover 'Curiosity' continues its sampling and analyzing of the Martian surface.

Fri. Stargazing