• Tonight

    Dec 18

    Lo 47°

    A little rain toward dawn

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Fri

    Dec 19

    60°Lo 51°

    Mostly cloudy, a little rain

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

    Dec 20

    59°Lo 52°

    Mostly cloudy and cool

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

    Dec 21

    62°Lo 53°

    Turning cloudy

    Low ragweed pollen levels
    • Precip
      4%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      71%
    more
  • Mon

    Dec 22

    62°Lo 50°

    Mostly sunny

    Ragweed Pollen Weather
    • Precip
      3%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      17%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Cloudy
Mostly Cloudy
Cloudy
Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Mostly Cloudy
Temp (°F) 54° 54° 55° 54° 56° 56° 56° 54°
RealFeel® 54° 55° 55° 55° 56° 55° 53° 50°
Humidity 87% 86% 85% 87% 82% 80% 80% 86%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
11%
 
11%
 
11%
 
7%
 
0%
 
0%
 
0%
 
0%
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 N 4 SSE 5 S 6 SSE 6 S 6 SSW 7 S 7 SSW
UV Index 0 1 1 1 1 1 1 0
Cloud Cover 97% 82% 95% 90% 82% 79% 72% 88%
Dew Point 50° 50° 51° 51° 50° 50° 50° 50°
Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F

Temperature History - Dec 18

more Historical Weather Data >
  Today Normal Record 12/18/2013
High 56° 59° N/A 54°
Low 47° 42° N/A 39°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:19 AM with 9:35 of sunlight, then sets at 4:54 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:41 AM with 10:53 of moolight, then sets at 2:34 PM

Half Moon Bay Weather Report

San Francisco: Dry Weather Ahead for the Weekend

December 18, 2014; 3:34 PM ET

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

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps