• Today

    Feb 27

    23°Lo 1°

    Partly sunny and very cold

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Sat

    Feb 28

    27°Lo 2°

    Plenty of sun

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Sun

    Mar 1

    32°Lo 24°

    Increasing clouds and cold

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Mon

    Mar 2

    37°Lo 10°

    Snow early in the morning

    Low ragweed pollen levels
    • Precip
      55%
    • Wind
      Speed
      14 mph
    • Cloud
      Cover
      80%
    more
  • Tue

    Mar 3

    31°Lo 21°

    Mostly cloudy

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      77%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Sunny
Mostly Sunny
Mostly Sunny
Partly Sunny
Partly Sunny
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°F) 11° 17° 22° 25° 28° 29° 32° 30°
RealFeel® 19° 27° 32° 34° 35° 34° 34° 30°
Humidity 58% 48% 42% 38% 34% 34% 34% 39%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
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Snow
 
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Ice
 
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  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 2 W 2 SW 4 SW 4 SW 5 SW 5 SW 5 SW 5 SSW
UV Index 2 2 3 3 3 2 1 1
Cloud Cover 20% 21% 29% 36% 43% 50% 58% 65%
Dew Point -1°
Middle Grid line 35 F Middle Grid line 30 F Middle Grid line 25 F Middle Grid line 20 F Middle Grid line 15 F Middle Grid line 10 F

Temperature History - Mar 1

more Historical Weather Data >
  Today Normal Record 3/1/2014
High 32° 40° N/A 33°
Low 24° 23° N/A

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:22 AM with 11:13 of sunlight, then sets at 5:35 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:04 PM with 14:21 of moolight, then sets at 4:25 AM

Londonderry Weather Report

Boston: Less Extreme Cold, Storms in Store Next Week

February 27, 2015; 6:45 AM ET

While prolonged warmth for the Boston area is still a long way off, temperatures will recover to less extreme levels next week. more >

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Sun. Dust & Dander

Sun. Wind Maps