• Early AM

    Sep 20

    Lo 37°

    Partly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Today

    Sep 20

    70°Lo 58°

    Warmer with clouds and sun

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

    Sep 21

    77°Lo 59°

    Variable cloudiness

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

    Sep 22

    73°Lo 44°

    Sun and clouds

    Low ragweed pollen levels
    • Precip
      18%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      60%
    more
  • Tue

    Sep 23

    69°Lo 44°

    Partly sunny

    Low ragweed pollen levels
    • Precip
      5%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      26%
    more
Next Previous
Hi 70° RealFeel® 69° Precipitation 3%

Day

N

E

S

W

  • SSW 6 mph
  • Gusts: 11 mph

Warmer with times of clouds and sun

  • Max UV Index: 3 (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 58° RealFeel® 57° Precipitation 25%

Night

N

E

S

W

  • S 4 mph
  • Gusts: 6 mph

Partly cloudy and mild

  • Max UV Index: N/A
  • Thunderstorms: 10%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Londonderry Pollen Levels - September 20

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Sep 20

more Historical Weather Data >
  Today Normal Record 9/20/2013
High 70° 71° N/A 79°
Low 58° 51° N/A 51°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:30 AM with 12:17 of sunlight, then sets at 6:47 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:03 AM with 13:48 of moolight, then sets at 4:51 PM

Top Story

Londonderry Weather Report

Boston: September Temperature Roller Coaster to Continue

September 19, 2014; 11:02 AM ET

In keeping with tradition, temperatures will continue their up-and-down cycle during the second half of September around Boston. more >

Sat. Pollen

Sat. Dust & Dander

Sat. Wind Maps