• Today

    Jul 30

    90°Lo 65°

    A heavy t-storm in the p.m.

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Fri

    Jul 31

    90°Lo 61°

    Sunny, hot and less humid

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Sat

    Aug 1

    88°Lo 64°

    Sun mixing with clouds; warm

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Sun

    Aug 2

    86°Lo 64°

    Mostly sunny

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    Aug 3

    90°Lo 69°

    A thunderstorm possible

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 90° RealFeel® 92° Precipitation 6%

Day

N

E

S

W

  • W 9 mph
  • Gusts: 15 mph

Plenty of sunshine, hot and less humid

  • 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 61° RealFeel® 61° Precipitation 13%

Night

N

E

S

W

  • WSW 5 mph
  • Gusts: 10 mph

Clear

  • Max UV Index: N/A
  • Thunderstorms: 4%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Waltham Pollen Levels - July 31

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass Pollen

    Low

  • Ragweed Pollen

    Low

  • Tree Pollen

    Low

  • Mold Pollen

    Low

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2014
High 90° 82° N/A 81°
Low 61° 61° N/A 53°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:36 AM with 14:30 of sunlight, then sets at 8:06 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:05 PM with 10:56 of moolight, then sets at 7:01 AM

Waltham Weather Report

Boston: Dog Days of Summer in Store for Rest of Week

July 30, 2015; 4:34 AM ET

Typical hot and humid weather, known as the dog days of summer, is in store for the Boston area during much of this week. more >

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps