• Today

    Sep 18

    73°Lo 42°

    Sunny to partly cloudy

    Excellent for an outdoor bbq
    • Precip
      4%
    • Hi
      RealFeel
      76°
    • Wind
      Gust
      10 mph
  • Fri

    Sep 19

    59°Lo 38°

    Mostly sunny and cooler

    Good for an outdoor bbq
    • Precip
      8%
    • Hi
      RealFeel
      60°
    • Wind
      Gust
      19 mph
    more
  • Sat

    Sep 20

    70°Lo 53°

    Warmer

    Very Good for an outdoor bbq
    • Precip
      6%
    • Hi
      RealFeel
      67°
    • Wind
      Gust
      26 mph
    more
  • Sun

    Sep 21

    79°Lo 57°

    Some sun, then clouds

    Very Good for an outdoor bbq
    • Precip
      21%
    • Hi
      RealFeel
      77°
    • Wind
      Gust
      13 mph
    more
  • Mon

    Sep 22

    72°Lo 46°

    Chance of a morning shower

    Very Good for an outdoor bbq
    • Precip
      30%
    • Hi
      RealFeel
      71°
    • Wind
      Gust
      17 mph
    more
Next Previous
Hi 73° RealFeel® 76° Precipitation 4%

Day

N

E

S

W

  • NW 5 mph
  • Gusts: 10 mph

Sunny to partly cloudy

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 5%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 42° RealFeel® 31° Precipitation 25%

Night

N

E

S

W

  • N 13 mph
  • Gusts: 28 mph

Mainly clear, breezy and chilly

  • 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 - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 73° 72° N/A 73°
Low 42° 50° N/A 37°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:28 AM with 12:22 of sunlight, then sets at 6:50 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:13 AM with 14:30 of moolight, then sets at 3:43 PM

Top Story

Waltham Weather Report

Boston: Remainder of Week to Be Dry, Cool

September 18, 2014; 8:02 AM ET

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

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Thu. Outdoor Entertaining

Thu. Wind Maps

Thu. UV Index