• Sat

    Sep 17

    74°Lo 54°

    Partly sunny

    Common Cold Weather
    • Avg
      Temp
      64°
    • Avg
      RealFeel
      62°
    • Hi
      RealFeel
      73°
    more
  • Sun

    Sep 18

    75°Lo 53°

    Mostly cloudy, a little rain

    Common Cold Weather
    • Avg
      Temp
      64°
    • Avg
      RealFeel
      64°
    • Hi
      RealFeel
      76°
    more
  • Mon

    Sep 19

    73°Lo 54°

    Partly sunny

    Common Cold Weather
    • Avg
      Temp
      64°
    • Avg
      RealFeel
      64°
    • Hi
      RealFeel
      77°
    more
  • Tue

    Sep 20

    73°Lo 53°

    Sunshine

    Common Cold Weather
    • Avg
      Temp
      63°
    • Avg
      RealFeel
      63°
    • Hi
      RealFeel
      74°
    more
  • Wed

    Sep 21

    70°Lo 52°

    Sunshine

    Common Cold Weather
    • Avg
      Temp
      61°
    • Avg
      RealFeel
      64°
    • Hi
      RealFeel
      74°
Next Previous
Hi 70° RealFeel® 74° Precipitation 20%

Day

N

E

S

W

  • E 5 mph
  • Gusts: 12 mph

Sunshine

  • Max UV Index: 5 (Moderate)
  • 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 52° RealFeel® 54° Precipitation 20%

Night

N

E

S

W

  • SW 5 mph
  • Gusts: 12 mph

Clear

  • 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 - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2015
High 70° 70° N/A 71°
Low 52° 50° N/A 47°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:32 AM with 12:11 of sunlight, then sets at 6:43 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:20 PM with 14:49 of moolight, then sets at 1:09 PM

Londonderry Weather Report

September to start on cooler, less humid note in northeastern US

August 28, 2016; 10:28 AM ET

Brief relief from heat and humidity will arrive in the northeastern United States at the start of September. more >

Flu Season is Just Around the Corner

Sep 11, 2012; 2:00 PM ET The peak of flu season may not be until January, but preparations should begin now. Adrienne Veilleux has more.