• Tonight

    Jul 28

    Lo 70°

    Mostly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Fri

    Jul 29

    78°Lo 62°

    Rain and a t-storm; cooler

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

    Jul 30

    86°Lo 66°

    Warmer with clouds and sun

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

    Jul 31

    76°Lo 65°

    Not as warm with showers

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

    Aug 1

    75°Lo 61°

    Mostly cloudy

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
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  Sun
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Cloudy
Showers
Cloudy
Showers
Cloudy
Cloudy
Showers
Cloudy
Temp (°F) 70° 72° 73° 74° 76° 74° 71° 73°
RealFeel® 71° 71° 76° 75° 80° 77° 70° 75°
Humidity 70% 66% 63% 60% 55% 59% 77% 72%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
49%
 
54%
 
46%
 
51%
 
49%
 
49%
 
54%
 
46%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
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0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 4 S 5 S 6 S 6 S 6 S 6 SSE 6 SSE 6 SE
UV Index 2 2 3 3 3 3 2 2
Cloud Cover 86% 93% 94% 94% 94% 94% 94% 94%
Dew Point 60° 60° 60° 59° 59° 59° 64° 63°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2015
High 76° 82° N/A 88°
Low 65° 63° N/A 64°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:36 AM with 14:31 of sunlight, then sets at 8:07 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:22 AM with 14:55 of moolight, then sets at 6:17 PM

Londonderry Weather Report

Torrential downpours in northeastern US to ease heat wave, raise flash flood risk

July 28, 2016; 8:02 PM ET

As July draws to a close, a storm system swinging up from the Deep South will bring downpours to the northeastern U.S. and break the back of an extended heat wave. more >

Sun. Dust & Dander

Sun. Wind Maps