• Today

    Jul 13

    88°Lo 68°

    An afternoon thunderstorm

    Frizz Forecast Weather
    • Wind
      Gust
      17 mph
    • Precip
      55%
    • Hours of Precip
      3.5
    more
  • Mon

    Jul 14

    85°Lo 70°

    Variable clouds, a t-storm

    Frizz Forecast Weather
    • Wind
      Gust
      10 mph
    • Precip
      55%
    • Hours of Precip
      5
  • Tue

    Jul 15

    84°Lo 65°

    Variably cloudy with t-storms

    Frizz Forecast Weather
    • Wind
      Gust
      13 mph
    • Precip
      65%
    • Hours of Precip
      4.5
    more
  • Wed

    Jul 16

    74°Lo 59°

    A thunderstorm possible

    Frizz Forecast Weather
    • Wind
      Gust
      7 mph
    • Precip
      30%
    • Hours of Precip
      0
    more
  • Thu

    Jul 17

    81°Lo 59°

    Partly sunny and warmer

    Frizz Forecast Weather
    • Wind
      Gust
      10 mph
    • Precip
      15%
    • Hours of Precip
      0
    more
Next Previous
Hi 85° RealFeel® 92° Precipitation 55%

Day

N

E

S

W

  • WSW 6 mph
  • Gusts: 10 mph

More clouds than sun; humid with a shower or thunderstorm around

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 60%
  • Precipitation: 0.35 in
  • Rain: 0.35 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs
Lo 70° RealFeel® 66° Precipitation 60%

Night

N

E

S

W

  • S 12 mph
  • Gusts: 18 mph

Rather cloudy, breezy and humid with a couple of showers and a thunderstorm

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.3 in
  • Rain: 0.3 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 3 hrs
  • Hours of Rain: 3 hrs

Temperature History - Jul 14

more Historical Weather Data >
  Today Normal Record 7/14/2013
High 85° 83° 95° (1965) 90°
Low 70° 60° 49° (1953) 69°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:20 AM with 15:02 of sunlight, then sets at 8:22 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:44 PM with 11:34 of moolight, then sets at 9:18 AM

Top Story

North Chelmsford Weather Report

Boston: New Week Brings Storm, Flooding Threat

July 13, 2014; 3:43 AM ET

The risk of thunderstorms and flash flooding will return for the new week. 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