• Tonight

    Sep 4

    Lo 50°

    Clear and cooler but pleasant

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

    Sep 5

    80°Lo 55°

    Plenty of sunshine

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

    Sep 6

    86°Lo 62°

    Sunny and very warm

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

    Sep 7

    89°Lo 70°

    Very warm with plenty of sun

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

    Sep 8

    94°Lo 71°

    Mostly sunny and hot

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 76° RealFeel® 77° Precipitation 9%

Day

N

E

S

W

  • NE 9 mph
  • Gusts: 15 mph

Not as warm with clouds and sun

  • Max UV Index: 4 (Moderate)
  • 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 50° RealFeel® 51° Precipitation 8%

Night

N

E

S

W

  • N 5 mph
  • Gusts: 9 mph

Clear and cooler but pleasant

  • 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

Lancaster Pollen Levels - September 4

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

    Low

  • Mold Pollen

    Low

  • Tree Pollen

    Low

  • Ragweed Pollen

    Low

Temperature History - Sep 4

more Historical Weather Data >
  Today Normal Record 9/4/2014
High 76° 78° N/A 86°
Low 50° 55° N/A 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:15 AM with 13:01 of sunlight, then sets at 7:16 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:19 PM with 14:43 of moolight, then sets at 2:02 PM

Lancaster Weather Report

Boston: Warmth to Rebuild Labor Day Weekend After Cooldown

September 4, 2015; 5:49 PM ET

A push of cool air from northeastern Canada will keep warmth, haze and humidity at bay around Boston into the first part of the Labor Day weekend before all three conditions build by early next week. more >

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps