• Tonight

    Apr 19

    Lo 39°

    Partly cloudy

    Hair Frizz Weather
    • Wind
      Gust
      17 mph
    • Precip
      15%
    • Hours of Precip
      0
    more
  • Mon

    Apr 20

    47°Lo 44°

    Becoming windier with rain

    Watch for hair frizz
    • Wind
      Gust
      30 mph
    • Precip
      69%
    • Hours of Precip
      11.5
  • Tue

    Apr 21

    63°Lo 41°

    Warmer with periods of rain

    Advisory for hair frizz
    • Wind
      Gust
      16 mph
    • Precip
      64%
    • Hours of Precip
      3
    more
  • Wed

    Apr 22

    59°Lo 39°

    Mostly cloudy and breezy

    Watch for hair frizz
    • Wind
      Gust
      28 mph
    • Precip
      25%
    • Hours of Precip
      1.5
    more
  • Thu

    Apr 23

    54°Lo 35°

    Cloudy, a shower; breezy

    Unlikely for hair frizz
    • Wind
      Gust
      20 mph
    • Precip
      40%
    • Hours of Precip
      1
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
5pm
6pm 7pm 8pm 9pm 10pm 11pm Tue
12am
  5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
Forecast
Cloudy
Rain
Cloudy
Cloudy
Cloudy
Rain
Rain
Rain
Temp (°F) 47° 47° 47° 46° 44° 46° 47° 48°
RealFeel® 36° 34° 37° 36° 35° 35° 38° 40°
Humidity 78% 78% 80% 87% 93% 92% 90% 89%
   
  5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
Rain
 
46%
 
54%
 
49%
 
46%
 
49%
 
53%
 
65%
 
65%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
Wind (mph) 20 E 17 E 16 E 15 E 13 E 12 E 10 E 9 E
UV Index 1 0 0 0 0 0 0 0
Cloud Cover 100% 100% 100% 100% 99% 99% 100% 100%
Dew Point 40° 41° 41° 42° 42° 43° 44° 45°
Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F

Temperature History - Apr 20

more Historical Weather Data >
  Today Normal Record 4/20/2014
High 47° 60° N/A 57°
Low 44° 39° N/A 30°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:56 AM with 13:37 of sunlight, then sets at 7:33 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:21 AM with 14:32 of moolight, then sets at 9:53 PM

Derry Weather Report

2015 Boston Marathon Forecast: Rain and Wind in Store for Runners

April 19, 2015; 7:12 PM ET

The 119th Boston Marathon will take place on Monday, April 20, and runners set to take on the historic course will face cool and rainy conditions. more >

The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.

Mon. Hair Frizz

Mon. Wind Maps

Mon. UV Index