• Tonight

    Jul 27

    Lo 64°

    Mainly clear

    Stargazing Weather
    • Cloud
      Cover
      11%
    • Precip
      13%
    • Hours of Precip
      0
    more
  • Thu

    Jul 28

    95°Lo 69°

    Sun mixing with clouds; hot

    Poor for stargazing
    • Cloud
      Cover
      95%
    • Precip
      21%
    • Hours of Precip
      0
    more
  • Fri

    Jul 29

    78°Lo 62°

    Showers and a heavier t-storm

    Poor for stargazing
    • Cloud
      Cover
      81%
    • Precip
      60%
    • Hours of Precip
      5
  • Sat

    Jul 30

    84°Lo 62°

    Intervals of clouds and sun

    Good for stargazing
    • Cloud
      Cover
      38%
    • Precip
      15%
    • Hours of Precip
      0
    more
  • Sun

    Jul 31

    79°Lo 64°

    Mostly cloudy, showers around

    Poor for stargazing
    • Cloud
      Cover
      76%
    • Precip
      66%
    • Hours of Precip
      5
    more
Next Previous
Hi 78° RealFeel® 91° Precipitation 69%

Day

N

E

S

W

  • E 5 mph
  • Gusts: 8 mph

A couple of showers and a heavy thunderstorm; mostly cloudy and cooler

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 60%
  • Precipitation: 1.11 in
  • Rain: 1.11 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 4 hrs
  • Hours of Rain: 4 hrs
Lo 62° RealFeel® 63° Precipitation 60%

Night

N

E

S

W

  • NNW 4 mph
  • Gusts: 7 mph

A couple of showers and a thunderstorm in the evening; otherwise, mostly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 40%
  • Precipitation: 0.1 in
  • Rain: 0.1 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Temperature History - Jul 29

more Historical Weather Data >
  Today Normal Record 7/29/2015
High 78° 82° N/A 93°
Low 62° 61° N/A 62°

Solunar Information for Waltham, MA

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:35 AM with 14:32 of sunlight, then sets at 8:07 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:38 AM with 14:40 of moolight, then sets at 4:18 PM

Tue, Aug 2
New
Wed, Aug 10
First
Thu, Aug 18
Full
Thu, Aug 25
Last

Waltham Weather Report

Heat wave to deteriorate across northeastern US as downpours unleash up to 2 inches of rain

July 27, 2016; 8:11 PM ET

As July draws to a close, a storm system swinging up from the Deep South will bring downpours to the northeastern U.S. and break the back of an extended heat wave. more >

'Frankenfish' Ready for Market

Dec 7, 2012; 7:08 AM ET A new lab-created meat is waiting for FDA approval that is at once very different and just the same as your favorite fish dinner.

Fri. Stargazing