• Today

    May 18

    71°Lo 43°

    Mostly sunny and nice

    Very High indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more

  • Sun

    May 19

    68°Lo 48°

    A brief shower or two

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High

  • Mon

    May 20

    75°Lo 61°

    A thunderstorm in the area

    Very High indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more

  • Tue

    May 21

    81°Lo 59°

    A couple of showers possible

    Extreme indoor dust & dander levels
    • Precip
      30%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      94%
    more

  • Wed

    May 22

    67°Lo 56°

    Cooler with a few showers

    Extreme indoor dust & dander levels
    • Precip
      60%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      94%
    more
Next Previous
Hi 68° RealFeel® 70° Precipitation 57%

Day

N

E

S

W

  • SSE 5 mph
  • Gusts: 10 mph

Variable cloudiness with a passing shower or two

  • Max UV Index: 4 (Moderate)
  • Thunderstorms: 20%
  • Precipitation: 0.06 in
  • Rain: 0.06 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs
Lo 48° RealFeel® 47° Precipitation 55%

Night

N

E

S

W

  • S 3 mph
  • Gusts: 5 mph

Cloudy with a passing shower

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 0.04 in
  • Rain: 0.04 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Londonderry Pollen Levels - May 19

  • Extreme
  • Very High
  • High
  • Moderate
  • Low

  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    High

  • Mold

    Pollen

    Low

Temperature History - May 19

more Historical Weather Data >
  Today Normal Record 5/19/2012
High 68° 68° N/A 83°
Low 48° 44° N/A 42°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:24 AM with 14:48 of sunlight, then sets at 8:12 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:05 PM with 12:19 of moolight, then sets at 2:24 AM

How Weather Impacts Seasonal Allergy Symptoms

May 13, 2013; 5:00 AM ET If you suffer with seasonal allergies, the weather can relieve or worsen your symptoms. Marja Martinez has the details.

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps