• Today

    Apr 20

    81°Lo 47°

    Pleasant and warmer

    Low indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Mon

    Apr 21

    72°Lo 44°

    Partly sunny and not as warm

    Low indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Tue

    Apr 22

    66°Lo 42°

    Mostly cloudy with a shower

    Low indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Wed

    Apr 23

    72°Lo 48°

    Partly sunny

    Low indoor dust & dander levels
    • Precip
      5%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      27%
    more
  • Thu

    Apr 24

    75°Lo 48°

    Times of sun and clouds

    Low indoor dust & dander levels
    • Precip
      20%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      46%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°F) 57° 59° 64° 68° 69° 71° 72° 70°
RealFeel® 59° 63° 69° 71° 73° 74° 74° 69°
Humidity 90% 82% 74% 66% 58% 51% 48% 50%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
0%
 
0%
 
0%
 
0%
 
2%
 
6%
 
6%
 
6%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 4 SW 5 SW 5 SW 6 SW 7 SW 8 SW 8 SW 9 SW
UV Index 2 3 4 5 6 6 5 3
Cloud Cover 70% 70% 70% 70% 69% 65% 70% 70%
Dew Point 54° 54° 55° 56° 54° 52° 52° 50°
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 - Apr 21

more Historical Weather Data >
  Today Normal Record 4/21/2013
High 72° 74° 94° (2009) 86°
Low 44° 42° 28° (2008) 41°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:26 AM with 13:27 of sunlight, then sets at 7:53 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:27 AM with 10:32 of moolight, then sets at 11:59 AM

Top Story

Calistoga Weather Report

Chance of Rain in San Francisco on Tuesday

April 20, 2014; 3:10 PM ET

There hasn't been any measurable precipitation in San Francisco since April 4. more >

Is it a Cold or the Flu?

Apr 19, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps