• Mon

    May 18

    74°Lo 54°

    Cloudy with a touch of rain

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Tue

    May 19

    72°Lo 49°

    A little a.m. rain; clearing

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Wed

    May 20

    68°Lo 46°

    Mostly sunny

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
  • Thu

    May 21

    68°Lo 46°

    Times of clouds and sun

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Fri

    May 22

    69°Lo 53°

    Cloudy

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
Hi 68° RealFeel® 79° Precipitation 10%

Day

N

E

S

W

  • WNW 4 mph
  • Gusts: 8 mph

Mostly sunny

  • Max UV Index: 7 (High)
  • 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 46° RealFeel® 46° Precipitation 10%

Night

N

E

S

W

  • NW 4 mph
  • Gusts: 8 mph

Clear

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

Temperature History - May 20

more Historical Weather Data >
  Today Normal Record 5/20/2014
High 68° 70° N/A 75°
Low 46° 49° N/A 51°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:18 AM with 14:48 of sunlight, then sets at 8:06 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:38 AM with 14:53 of moolight, then sets at 10:31 PM

Londonderry Weather Report

Late-Week Storm Could Bring Rain, Wind to Boston

April 28, 2015; 2:09 AM ET

Following midweek partial sunshine around Boston, a southern storm could spread wind and rain along the Atlantic coast on at the end of the week. more >

The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.