• Today

    Aug 21

    66°Lo 57°

    Cooler with thunderstorms

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

    Aug 22

    66°Lo 52°

    Clouds and sun with a shower

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

    Aug 23

    73°Lo 50°

    Some sun with a stray shower

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

    Aug 24

    77°Lo 51°

    Intervals of clouds and sun

    Low ragweed pollen levels
    • Precip
      25%
    • Wind
      Speed
      2 mph
    • Cloud
      Cover
      50%
    more
  • Mon

    Aug 25

    80°Lo 53°

    Mostly sunny and comfortable

    Ragweed Pollen Weather
    • Precip
      5%
    • Wind
      Speed
      3 mph
    • Cloud
      Cover
      11%
    more
Next Previous
Next 8 hours >
  Thu
12am
1am 2am 3am 4am 5am 6am 7am
  12am 1am 2am 3am 4am 5am 6am 7am
Forecast
Cloudy
Cloudy
Mostly Cloudy
Showers
Showers
Showers
Showers
Cloudy
Temp (°F) 63° 62° 61° 61° 60° 59° 59° 59°
RealFeel® 61° 61° 60° 59° 57° 57° 57° 58°
Humidity 83% 84% 85% 84% 85% 86% 86% 90%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Rain
 
7%
 
11%
 
49%
 
57%
 
62%
 
59%
 
59%
 
49%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Wind (mph) 3 ESE 3 ESE 2 SE 2 E 2 SE 2 SSE 2 SE 2 SE
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 73% 72% 81% 91% 93% 94% 95% 92%
Dew Point 57° 57° 57° 56° 55° 55° 55° 56°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - Aug 21

more Historical Weather Data >
  Today Normal Record 8/21/2013
High 66° 79° N/A 86°
Low 57° 55° N/A 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:03 AM with 13:42 of sunlight, then sets at 7:45 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:28 AM with 14:46 of moolight, then sets at 5:14 PM

Top Story

Londonderry Weather Report

Boston: Showers to Retreat This Weekend

August 21, 2014; 3:10 PM ET

Following a surge of humidity and showers to end the week, dry and cooler air will push southward across the Boston areaa this weekend more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps