• Early AM

    Sep 2

    Lo 59°

    Mainly clear

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      72°
    • Hi
      RealFeel
      83°
    • Wind
      Speed
      2 mph
    more
  • Today

    Sep 2

    91°Lo 65°

    Mostly sunny and hot

    Poor for home energy
    • Avg
      RealFeel
      80°
    • Hi
      RealFeel
      95°
    • Wind
      Speed
      4 mph
    more
  • Thu

    Sep 3

    88°Lo 62°

    Sunny intervals, a t-storm

    Poor for home energy
    • Avg
      RealFeel
      79°
    • Hi
      RealFeel
      97°
    • Wind
      Speed
      6 mph
  • Fri

    Sep 4

    75°Lo 50°

    Sunny and not as warm

    Poor for home energy
    • Avg
      RealFeel
      65°
    • Hi
      RealFeel
      78°
    • Wind
      Speed
      2 mph
    more
  • Sat

    Sep 5

    81°Lo 56°

    Plenty of sunshine

    Poor for home energy
    • Avg
      RealFeel
      72°
    • Hi
      RealFeel
      86°
    • Wind
      Speed
      4 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
11am
12pm 1pm 2pm 3pm 4pm 5pm 6pm
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Forecast
Mostly Sunny
Partly Sunny
T-storms
Mostly Cloudy
Cloudy
T-storms
Cloudy
Mostly Cloudy
Temp (°F) 84° 85° 85° 88° 87° 82° 82° 82°
RealFeel® 93° 94° 93° 97° 94° 88° 88° 86°
Humidity 57% 52% 59% 51% 54% 72% 66% 65%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Rain
 
43%
 
47%
 
51%
 
47%
 
47%
 
51%
 
40%
 
34%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Wind (mph) 4 N 5 N 5 N 5 NNW 5 NNW 5 N 5 N 5 N
UV Index 4 5 5 4 3 2 1 1
Cloud Cover 25% 42% 70% 82% 93% 95% 90% 78%
Dew Point 68° 66° 69° 68° 68° 72° 70° 70°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F

Temperature History - Sep 3

more Historical Weather Data >
  Today Normal Record 9/3/2014
High 88° 77° N/A 82°
Low 62° 57° N/A 65°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:12 AM with 13:05 of sunlight, then sets at 7:17 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:31 PM with 14:30 of moolight, then sets at 1:01 PM

Londonderry Weather Report

Boston: Late-Week Front to Slash Summer Temperatures

September 2, 2015; 12:30 AM ET

Wednesday and Thursday will bring weather more common for early July rather than early September, but the summer heat will come to an end by the weekend. 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.

Thu. Home Energy Efficiency

Thu. Degree Days

Thu. UV Index