• Today

    Dec 18

    42°Lo 26°

    Mostly cloudy

    Watch for hair frizz
    • Wind
      Gust
      24 mph
    • Precip
      55%
    • Hours of Precip
      1
    more
  • Fri

    Dec 19

    34°Lo 21°

    Mostly sunny

    Watch for hair frizz
    • Wind
      Gust
      15 mph
    • Precip
      8%
    • Hours of Precip
      0
  • Sat

    Dec 20

    34°Lo 26°

    Sunshine giving way to clouds

    Watch for hair frizz
    • Wind
      Gust
      7 mph
    • Precip
      19%
    • Hours of Precip
      0
    more
  • Sun

    Dec 21

    34°Lo 27°

    Mostly sunny

    Advisory for hair frizz
    • Wind
      Gust
      6 mph
    • Precip
      9%
    • Hours of Precip
      0
    more
  • Mon

    Dec 22

    37°Lo 32°

    Turning out cloudy

    Advisory for hair frizz
    • Wind
      Gust
      6 mph
    • Precip
      18%
    • Hours of Precip
      2
    more
Next Previous
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Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 29° 28° 27° 26° 26° 27° 28° 30°
RealFeel® 14° 13° 15° 15° 16° 17° 21° 23°
Humidity 70% 70% 71% 72% 72% 70% 66% 62%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
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Snow
 
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  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 15 NW 15 NW 12 NW 12 NW 10 NW 9 NW 8 NW 9 NW
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 26% 26% 26% 26% 11% 11% 11% 11%
Dew Point 20° 20° 19° 18° 18° 18° 18° 18°
Middle Grid line 35 F Middle Grid line 30 F Middle Grid line 25 F

Temperature History - Dec 19

more Historical Weather Data >
  Today Normal Record 12/19/2013
High 34° 37° N/A 40°
Low 21° 21° N/A 27°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:12 AM with 9:01 of sunlight, then sets at 4:13 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:20 AM with 10:16 of moolight, then sets at 2:36 PM

Derry Weather Report

Boston: Quiet Weekend Weather to be Followed by Christmas Eve Storm

December 18, 2014; 1:08 PM ET

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

The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.

Fri. Hair Frizz

Fri. Wind Maps

Fri. UV Index