• Today

    Jul 22

    89°Lo 67°

    Mostly sunny and very warm

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Wed

    Jul 23

    90°Lo 65°

    Clouds and sun; breezy, hot

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Thu

    Jul 24

    76°Lo 54°

    A morning shower; cooler

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

    Jul 25

    83°Lo 58°

    Mostly sunny and beautiful

    Low ragweed pollen levels
    • Precip
      11%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      11%
    more
  • Sat

    Jul 26

    85°Lo 63°

    Sunshine

    Ragweed Pollen Weather
    • Precip
      11%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      5%
    more
Next Previous
Hi 90° RealFeel® 93° Precipitation 25%

Day

N

E

S

W

  • SW 13 mph
  • Gusts: 24 mph

Breezy, hot and humid with times of clouds and sunshine

  • Max UV Index: 7 (High)
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 65° RealFeel® 60° Precipitation 66%

Night

N

E

S

W

  • WNW 4 mph
  • Gusts: 10 mph

Thunderstorms, strong early; rather cloudy and humid

  • Max UV Index: N/A
  • Thunderstorms: 91%
  • Precipitation: 0.6 in
  • Rain: 0.6 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 4 hrs
  • Hours of Rain: 4 hrs

Chelmsford Pollen Levels - July 23

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Jul 23

more Historical Weather Data >
  Today Normal Record 7/23/2013
High 90° 83° N/A 83°
Low 65° 61° N/A 68°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:28 AM with 14:47 of sunlight, then sets at 8:15 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:46 AM with 14:55 of moolight, then sets at 5:41 PM

Top Story

Chelmsford Weather Report

Boston: Surge of Warmth, Humidity This Week to be Brief

July 22, 2014; 6:05 AM ET

Warmer and more humid air will surge into the Boston into midweek but will not stick around long. more >

Battling the Common Cold

Jun 23, 2014; 5:00 AM ET Marja Martinez talks about identifying and fighting the common cold.

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps