• Tonight

    Aug 20

    Lo 57°

    Mostly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Thu

    Aug 21

    74°Lo 59°

    Partly sunny and not as warm

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

    Aug 22

    74°Lo 58°

    Clouds and sun with a shower

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Sat

    Aug 23

    74°Lo 56°

    Clouds and sun with a shower

    Low ragweed pollen levels
    • Precip
      40%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      46%
    more
  • Sun

    Aug 24

    75°Lo 52°

    An afternoon shower

    Ragweed Pollen Weather
    • Precip
      40%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      69%
    more
Next Previous
Hi 74° RealFeel® 75° Precipitation 25%

Day

N

E

S

W

  • SE 4 mph
  • Gusts: 7 mph

Not as warm with intervals of clouds and sun

  • Max UV Index: 4 (Moderate)
  • Thunderstorms: 11%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 59° RealFeel® 58° Precipitation 25%

Night

N

E

S

W

  • N 2 mph
  • Gusts: 4 mph

Partly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 11%
  • 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 - August 21

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Aug 21

more Historical Weather Data >
  Today Normal Record 8/21/2013
High 74° 81° N/A 89°
Low 59° 59° N/A 66°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:00 AM with 13:39 of sunlight, then sets at 7:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:26 AM with 14:41 of moolight, then sets at 5:07 PM

Top Story

Lancaster Weather Report

Heavy Rain to Avoid Boston Through Weekend

August 20, 2014; 12:04 PM ET

A wedge of dry air will slowly erode later this week and may allow spotty showers to survive the trip into Boston from the Midwest. more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps