• Today

    Apr 20

    57°Lo 32°

    Mostly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      59°
    • UV
      6 - High
    • Air Qual.
      Good
  • Mon

    Apr 21

    68°Lo 41°

    Mostly sunny and warmer

    Beneficial weather for asthma
    • Hi
      RealFeel
      70°
    • UV
      6 - High
    • Air Qual.
      Good
    more
  • Tue

    Apr 22

    72°Lo 44°

    Some sun, then clouds

    Neutral weather for asthma
    • Hi
      RealFeel
      71°
    • UV
      6 - High
    • Air Qual.
      Moderate
    more
  • Wed

    Apr 23

    61°Lo 34°

    Cooler with a passing shower

    Beneficial weather for asthma
    • Hi
      RealFeel
      56°
    • UV
      5 - Moderate
    • Cloud
      Cover
      72%
    more
  • Thu

    Apr 24

    61°Lo 37°

    Partly sunny and windy

    Beneficial weather for asthma
    • Hi
      RealFeel
      57°
    • UV
      6 - High
    • Cloud
      Cover
      26%
    more
Next Previous
Hi 57° RealFeel® 59° Precipitation 6%

Day

N

E

S

W

  • SE 6 mph
  • Gusts: 12 mph

Mostly sunny

  • Max UV Index: 6 (High)
  • Thunderstorms: 6%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 32° RealFeel® 31° Precipitation 6%

Night

N

E

S

W

  • SSW 4 mph
  • Gusts: 9 mph

Partly cloudy

  • 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 - Apr 20

more Historical Weather Data >
  Today Normal Record 4/20/2013
High 57° 60° N/A 64°
Low 32° 38° N/A 40°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:57 AM with 13:35 of sunlight, then sets at 7:32 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:12 AM with 9:59 of moolight, then sets at 10:11 AM

Top Story

Waltham Weather Report

Boston: Milder Patriots' Day Follows Easter Cooldown

April 20, 2014; 3:41 AM ET

After taking a tumble Easter Sunday, temperatures will quickly rebound in Boston for Patriots' Day. more >

Is it a Cold or the Flu?

Apr 19, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Sun. Air Quality

Sun. Asthma Risk

Sun. UV Index