• Tonight

    Jul 31

    Lo 63°

    Clear

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      75°
    • Hi
      RealFeel
      87°
    • Wind
      Speed
      9 mph
  • Sat

    Aug 1

    85°Lo 60°

    Sun mixing with clouds

    Poor for home energy
    • Avg
      RealFeel
      75°
    • Hi
      RealFeel
      88°
    • Wind
      Speed
      10 mph
    more
  • Sun

    Aug 2

    85°Lo 65°

    Mostly sunny

    Poor for home energy
    • Avg
      RealFeel
      76°
    • Hi
      RealFeel
      87°
    • Wind
      Speed
      8 mph
    more
  • Mon

    Aug 3

    88°Lo 66°

    Some sun, then clouds

    Poor for home energy
    • Avg
      RealFeel
      76°
    • Hi
      RealFeel
      89°
    • Wind
      Speed
      12 mph
    more
  • Tue

    Aug 4

    84°Lo 61°

    A thunderstorm in the area

    Poor for home energy
    • Avg
      RealFeel
      74°
    • Hi
      RealFeel
      86°
    • Wind
      Speed
      10 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
8pm
9pm 10pm 11pm Sat
12am
1am 2am 3am
  8pm 9pm 10pm 11pm 12am 1am 2am 3am
Forecast
Mostly Sunny
Clear
Clear
Clear
Clear
Clear
Mostly Clear
Mostly Clear
Temp (°F) 79° 76° 74° 72° 70° 69° 67° 65°
RealFeel® 77° 74° 72° 70° 68° 67° 66° 64°
Humidity 44% 49% 57% 61% 64% 71% 75% 75%
   
  8pm 9pm 10pm 11pm 12am 1am 2am 3am
Rain
 
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0%
 
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0%
 
0%
Snow
 
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Ice
 
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  8pm 9pm 10pm 11pm 12am 1am 2am 3am
Wind (mph) 7 W 5 W 5 W 4 W 4 WSW 2 WSW 2 WSW 4 WSW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 11% 0% 0% 0% 2% 5% 10% 16%
Dew Point 56° 56° 58° 58° 57° 59° 59° 58°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2014
High 86° 82° N/A 81°
Low 63° 63° N/A 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:35 AM with 14:33 of sunlight, then sets at 8:08 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:06 PM with 10:55 of moolight, then sets at 7:01 AM

Derry Weather Report

Boston: Dry Weather Bouncing Back Good for Some but Not for All

July 31, 2015; 7:02 PM ET

Dry, sunny weather will bounce back into the greater Boston area after a cold front passed through early Friday morning. 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.

Fri. Home Energy Efficiency

Fri. Degree Days

Fri. UV Index