• Tonight

    Aug 4

    Lo 60°

    A t-storm early; mainly clear

    Ragweed Pollen Weather
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Wed

    Aug 5

    83°Lo 58°

    Partly sunny

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

    Aug 6

    80°Lo 56°

    Times of clouds and sun

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

    Aug 7

    78°Lo 58°

    Partly sunny

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

    Aug 8

    75°Lo 57°

    Periods of rain, some heavy

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 88° RealFeel® 94° Precipitation 55%

Day

N

E

S

W

  • WSW 8 mph
  • Gusts: 25 mph

Variable clouds; a few p.m. t-storms, some severe; storms can bring flooding and damaging winds

  • Max UV Index: 6 (High)
  • Thunderstorms: 100%
  • Precipitation: 0.33 in
  • Rain: 0.33 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 1.5 hrs
Lo 60° RealFeel® 61° Precipitation 55%

Night

N

E

S

W

  • W 4 mph
  • Gusts: 8 mph

A shower or thunderstorm around this evening; otherwise, clear to partly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 40%
  • Precipitation: 0.03 in
  • Rain: 0.03 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs

Waltham Pollen Levels - August 4

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

    Low

  • Ragweed Pollen

    Low

  • Tree Pollen

    Low

  • Mold Pollen

    Low

Temperature History - Aug 4

more Historical Weather Data >
  Today Normal Record 8/4/2014
High 88° 82° N/A 84°
Low 60° 61° N/A 58°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:40 AM with 14:21 of sunlight, then sets at 8:01 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:35 PM with 13:15 of moolight, then sets at 11:50 AM

Waltham Weather Report

PHOTOS: Severe Weather Slams Boston

August 4, 2015; 6:32 PM ET

A line of violent thunderstorms tore across Massachusetts, including the Boston area, Tuesday afternoon. Isolated severe thunderstorms will continue into Tuesday evening. more >

Tue. Pollen

Tue. Dust & Dander

Tue. Wind Maps