• Early AM

    Jul 31

    Lo 57°

    Partly cloudy

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Today

    Jul 31

    89°Lo 58°

    Partly sunny and humid

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
  • Sat

    Aug 1

    86°Lo 56°

    Low clouds breaking

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Sun

    Aug 2

    85°Lo 56°

    Clouds breaking for sun

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Mon

    Aug 3

    83°Lo 54°

    Low clouds break for some sun

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    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
Partly Sunny
Partly Sunny
Partly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 78° 83° 86° 89° 88° 86° 84° 82°
RealFeel® 87° 95° 97° 98° 96° 93° 89° 85°
Humidity 62% 58% 53% 49% 52% 55% 61% 64%
   
  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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0%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Wind (mph) 4 SW 5 SW 5 SW 7 SW 7 SW 7 WSW 8 WSW 7 WSW
UV Index 6 7 7 7 6 4 3 1
Cloud Cover 45% 45% 45% 26% 26% 26% 26% 26%
Dew Point 64° 67° 67° 68° 68° 68° 69° 69°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2014
High 89° 92° 105° (2000) 101°
Low 58° 52° 45° (2010) 66°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:11 AM with 14:11 of sunlight, then sets at 8:22 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:30 PM with 11:12 of moolight, then sets at 7:42 AM

Calistoga Weather Report

San Francisco: Dry Weather Continues in the Bay Area

July 31, 2015; 4:41 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 >

The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.

48 Hour Precipitation Forecast

Fri. Snow Day Potential