• Today

    Sep 18

    65°Lo 32°

    Partly sunny

    Watch for hair frizz
    • Wind
      Gust
      9 mph
    • Precip
      25%
    • Hours of Precip
      0
    more
  • Fri

    Sep 19

    58°Lo 35°

    Fog in the a.m.; mostly sunny

    Watch for hair frizz
    • Wind
      Gust
      6 mph
    • Precip
      9%
    • Hours of Precip
      0
    more
  • Sat

    Sep 20

    66°Lo 53°

    Sun mixing with clouds

    Advisory for hair frizz
    • Wind
      Gust
      28 mph
    • Precip
      9%
    • Hours of Precip
      0
  • Sun

    Sep 21

    73°Lo 52°

    Some sun, then clouds

    Advisory for hair frizz
    • Wind
      Gust
      13 mph
    • Precip
      25%
    • Hours of Precip
      4
    more
  • Mon

    Sep 22

    61°Lo 39°

    Times of clouds and sun

    Advisory for hair frizz
    • Wind
      Gust
      11 mph
    • Precip
      25%
    • Hours of Precip
      0
    more
Next Previous
Hi 66° RealFeel® 63° Precipitation 9%

Day

N

E

S

W

  • S 13 mph
  • Gusts: 28 mph

Breezy with sunshine mixing with some clouds

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 53° RealFeel® 49° Precipitation 21%

Night

N

E

S

W

  • SSW 5 mph
  • Gusts: 13 mph

Mostly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 3%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 20

more Historical Weather Data >
  Today Normal Record 9/20/2013
High 66° 69° N/A 78°
Low 53° 46° N/A 44°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:36 AM with 12:17 of sunlight, then sets at 6:53 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:09 AM with 13:49 of moolight, then sets at 4:58 PM

Top Story

Londonderry Weather Report

Boston: Remainder of Week to Be Dry, Cool

September 18, 2014; 12:02 PM ET

Rainfall will be scarce around Boston this week, but cool air will be plentiful. 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.

Sat. Hair Frizz

Sat. Wind Maps

Sat. UV Index