• Today

    May 23

    70°Lo 50°

    Clouds breaking and cool

    Fair for stargazing
    • Cloud
      Cover
      60%
    • Precip
      1%
    • Hours of Precip
      0
  • Sun

    May 24

    71°Lo 51°

    Low clouds, then sun

    Poor for stargazing
    • Cloud
      Cover
      66%
    • Precip
      1%
    • Hours of Precip
      0
    more
  • Mon

    May 25

    67°Lo 53°

    Low clouds, then sun and cool

    Poor for stargazing
    • Cloud
      Cover
      69%
    • Precip
      4%
    • Hours of Precip
      0
    more
  • Tue

    May 26

    68°Lo 50°

    Cool with clouds and sun

    Poor for stargazing
    • Cloud
      Cover
      90%
    • Precip
      2%
    • Hours of Precip
      0
    more
  • Wed

    May 27

    75°Lo 51°

    Mostly sunny and pleasant

    Very Good for stargazing
    • Cloud
      Cover
      20%
    • Precip
      1%
    • Hours of Precip
      0
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
11am
12pm 1pm 2pm 3pm 4pm 5pm 6pm
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Forecast
Cloudy
Cloudy
Cloudy
Partly Sunny
Partly Sunny
Partly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 60° 62° 65° 67° 68° 70° 68° 67°
RealFeel® 62° 66° 69° 71° 71° 71° 68° 65°
Humidity 71% 67% 65% 62% 59% 56% 58% 62%
   
  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%
 
0%
 
0%
 
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0%
 
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  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Wind (mph) 8 WNW 8 W 9 SW 12 SSW 13 SSW 13 SSW 13 SSW 13 SW
UV Index 2 4 5 7 6 4 3 1
Cloud Cover 99% 96% 95% 45% 43% 30% 26% 26%
Dew Point 51° 51° 53° 54° 53° 53° 53° 53°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - May 23

more Historical Weather Data >
  Today Normal Record 5/23/2014
High 70° 77° 99° (1943) 74°
Low 50° 51° 36° (1949) 49°

Solunar Information for Napa, CA

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:51 AM with 14:29 of sunlight, then sets at 8:20 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:09 AM with 13:46 of moolight, then sets at 12:55 AM

Mon, May 25
First
Tue, Jun 2
Full
Tue, Jun 9
Last
Tue, Jun 16
New

Napa Weather Report

San Francisco: Cool, Cloudy Weather to Linger for Holiday Weekend

May 23, 2015; 5:17 AM ET

More clouds and cooler weather can be expected across the Bay Area through the holiday weekend and into the new week. 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.

Sat. Stargazing