• Early AM

    Dec 20

    Lo 23°

    Clear

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      23°
    • Hi
      RealFeel
      24°
    • Wind
      Speed
      4 mph
    more
  • Today

    Dec 20

    35°Lo 24°

    Sun followed by some clouds

    Good for home energy
    • Avg
      RealFeel
      31°
    • Hi
      RealFeel
      37°
    • Wind
      Speed
      4 mph
  • Sun

    Dec 21

    34°Lo 25°

    Sun and some clouds

    Good for home energy
    • Avg
      RealFeel
      33°
    • Hi
      RealFeel
      40°
    • Wind
      Speed
      1 mph
    more
  • Mon

    Dec 22

    38°Lo 30°

    Some sun, then clouds

    Good for home energy
    • Avg
      RealFeel
      34°
    • Hi
      RealFeel
      40°
    • Wind
      Speed
      4 mph
    more
  • Tue

    Dec 23

    42°Lo 39°

    A touch of afternoon rain

    Fair for home energy
    • Avg
      RealFeel
      36°
    • Hi
      RealFeel
      37°
    • Wind
      Speed
      6 mph
    more
Next Previous
Hi 35° RealFeel® 37° Precipitation 11%

Day

N

E

S

W

  • N 4 mph
  • Gusts: 7 mph

Sun followed by some clouds

  • Max UV Index: 1 (Low)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 24° RealFeel® 25° Precipitation 11%

Night

N

E

S

W

  • NNW 4 mph
  • Gusts: 5 mph

Partly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Dec 20

more Historical Weather Data >
  Today Normal Record 12/20/2013
High 35° 37° 62° (1957) 49°
Low 24° 18° -12° (1951) 27°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:13 AM with 9:01 of sunlight, then sets at 4:14 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:24 AM with 10:01 of moolight, then sets at 3:25 PM

Merrimack Weather Report

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

December 19, 2014; 9:00 PM ET

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

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Sat. Home Energy Efficiency

Sat. Degree Days

Sat. UV Index