• Today

    Dec 20

    34°Lo 26°

    Turning cloudy

    Beneficial weather for asthma
    • Hi
      RealFeel
      32°
    • UV
      1 - Low
    • Air Qual.
      Good
    more
  • Sun

    Dec 21

    35°Lo 27°

    A little morning snow

    Beneficial weather for asthma
    • Hi
      RealFeel
      36°
    • UV
      1 - Low
    • Air Qual.
      Good
  • Mon

    Dec 22

    39°Lo 31°

    Some sun, then clouds

    Beneficial weather for asthma
    • Hi
      RealFeel
      39°
    • UV
      1 - Low
    • Air Qual.
      Good
    more
  • Tue

    Dec 23

    44°Lo 39°

    Mainly cloudy and damp

    Beneficial weather for asthma
    • Hi
      RealFeel
      41°
    • UV
      1 - Low
    • Cloud
      Cover
      94%
    more
  • Wed

    Dec 24

    53°Lo 44°

    Windy with rain; mild

    At Risk weather for asthma
    • Hi
      RealFeel
      41°
    • UV
      0 - Low
    • Cloud
      Cover
      99%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
4am
5am 6am 7am 8am 9am 10am 11am
  4am 5am 6am 7am 8am 9am 10am 11am
Forecast
Snow
Snow
Snow
Mostly Cloudy
Snow
Snow
Mostly Cloudy
Snow
Temp (°F) 27° 26° 26° 26° 27° 28° 31° 32°
RealFeel® 26° 26° 26° 26° 27° 29° 32° 34°
Humidity 83% 83% 81% 82% 83% 79% 75% 72%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
51%
 
52%
 
51%
 
49%
 
63%
 
63%
 
49%
 
67%
Ice
 
0%
 
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  4am 5am 6am 7am 8am 9am 10am 11am
Wind (mph) 4 NNW 4 N 4 N 4 N 4 N 4 N 4 N 2 N
UV Index 0 0 0 0 0 0 1 1
Cloud Cover 94% 94% 94% 76% 76% 76% 76% 76%
Dew Point 22° 22° 21° 22° 22° 23° 24° 24°
Middle Grid line 35 F Middle Grid line 30 F Middle Grid line 25 F

Temperature History - Dec 21

more Historical Weather Data >
  Today Normal Record 12/21/2013
High 35° 38° N/A 55°
Low 27° 19° N/A 28°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:13 AM with 9:04 of sunlight, then sets at 4:17 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:24 AM with 9:58 of moolight, then sets at 4:22 PM

Lancaster Weather Report

Boston: Chilly, Snowy Weekend to be Followed by Christmas Eve Storm

December 20, 2014; 12:30 PM ET

Following a chilly, snowy weekend, a major storm will affect Boston, and much of the East and Midwest on Christmas Eve. more >

The Dangers of Bus Travel

Dec 10, 2012; 5:00 AM ET While bus transportation is one of the most affordable, it is important to know which motor coach companies rank highest in safety.

Sun. Air Quality

Sun. Asthma Risk

Sun. UV Index