• Tonight

    Apr 29

    Lo 34°

    Partly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Sat

    Apr 30

    62°Lo 42°

    Intervals of clouds and sun

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

    May 1

    55°Lo 42°

    A little afternoon rain

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

    May 2

    50°Lo 42°

    Chilly with rain at times

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

    May 3

    60°Lo 43°

    Some sun, then clouds; warmer

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 55° RealFeel® 58° Precipitation 57%

Day

N

E

S

W

  • ESE 6 mph
  • Gusts: 9 mph

Mostly cloudy and cooler; a touch of rain in the afternoon

  • Max UV Index: 3 (Moderate)
  • Thunderstorms: 2%
  • Precipitation: 0.03 in
  • Rain: 0.03 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs
Lo 42° RealFeel® 34° Precipitation 58%

Night

N

E

S

W

  • ENE 7 mph
  • Gusts: 12 mph

Occasional rain and drizzle

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 0.11 in
  • Rain: 0.11 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 3.5 hrs
  • Hours of Rain: 3.5 hrs

Temperature History - May 1

more Historical Weather Data >
  Today Normal Record 5/1/2015
High 55° 64° N/A 56°
Low 42° 41° N/A 35°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:39 AM with 14:06 of sunlight, then sets at 7:45 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:35 AM with 11:07 of moolight, then sets at 1:42 PM

Waltham Weather Report

Rain to ease unusual northeastern US dryness but to put a damper on outdoor plans

April 29, 2016; 11:25 PM ET

Expanding rainfall will bring good news and bad news for people in the northeastern United States into early next week. more >

Sun. Dust & Dander

Sun. Wind Maps