• Tonight

    May 27

    Lo 67°

    Mostly cloudy, a shower; warm

    Ragweed Pollen Weather
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      5 - High
  • Sat

    May 28

    91°Lo 65°

    A thunderstorm in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      5 - High
    more
  • Sun

    May 29

    72°Lo 59°

    Clouds break for sun; cooler

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

    May 30

    76°Lo 63°

    Cloudy with a thunderstorm

    Low ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      5 - High
    more
  • Tue

    May 31

    86°Lo 60°

    Warmer with partial sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
8am
9am
  8am 9am
Forecast
Cloudy
Mostly Cloudy
Temp (°F) 63° 64°
RealFeel® 65° 67°
Humidity 78% 78%
   
  8am 9am
Rain
 
1%
 
1%
Snow
 
0%
 
0%
Ice
 
0%
 
0%
   
  8am 9am
Wind (mph) 4 NE 6 NNE
UV Index 1 2
Cloud Cover 100% 75%
Dew Point 56° 57°
Middle Grid line 65 F Middle Grid line 60 F

Temperature History - May 27

more Historical Weather Data >
  Today Normal Record 5/27/2015
High 82° 72° N/A 91°
Low 67° 51° N/A 68°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:12 AM with 15:02 of sunlight, then sets at 8:14 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:09 AM with -13:-43 of moolight, then sets at 10:26 AM

Derry Weather Report

Tropical moisture to dampen Memorial Day celebrations from DC to NYC, Boston

May 27, 2016; 6:39 PM ET

Tropical moisture may put outdoor Memorial Day plans in jeopardy from Washington D.C., to Boston on Monday. more >

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps