• Today

    Dec 18

    54°Lo 46°

    A couple of morning showers

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Fri

    Dec 19

    54°Lo 42°

    A little rain in the morning

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Sat

    Dec 20

    54°Lo 45°

    Mostly cloudy

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Sun

    Dec 21

    60°Lo 44°

    Low clouds

    Low ragweed pollen levels
    • Precip
      12%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      95%
    more
  • Mon

    Dec 22

    63°Lo 42°

    Mostly sunny

    Ragweed Pollen Weather
    • Precip
      6%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      19%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
7am
8am 9am 10am 11am 12pm 1pm 2pm
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Forecast
Cloudy
Showers
Showers
Cloudy
Mostly Cloudy
Cloudy
Cloudy
Cloudy
Temp (°F) 44° 44° 46° 48° 50° 51° 53° 54°
RealFeel® 43° 42° 45° 48° 51° 53° 53° 54°
Humidity 91% 94% 92% 91% 88% 84% 81% 78%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Rain
 
49%
 
61%
 
61%
 
40%
 
34%
 
27%
 
13%
 
13%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Wind (mph) 4 NNE 4 NE 4 ENE 2 E 2 ESE 4 SE 4 SE 4 SE
UV Index 0 0 0 0 1 1 1 1
Cloud Cover 100% 98% 94% 91% 89% 90% 91% 90%
Dew Point 42° 43° 44° 45° 46° 47° 47° 47°
Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F

Temperature History - Dec 18

more Historical Weather Data >
  Today Normal Record 12/18/2013
High 54° 53° N/A 59°
Low 46° 33° N/A 29°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:25 AM with 9:26 of sunlight, then sets at 4:51 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:45 AM with 10:48 of moolight, then sets at 2:33 PM

Lucerne Weather Report

San Francisco: Dry Weather Ahead for the Weekend

December 18, 2014; 9:19 AM ET

Conditions will turn dry for San Francisco this weekend and last into next week. more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps