• Today

    May 4

    84°Lo 61°

    Mostly sunny and warm

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
  • Tue

    May 5

    75°Lo 49°

    Thundershower

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

    May 6

    76°Lo 49°

    Partly sunny, nice and warm

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

    May 7

    80°Lo 54°

    Sunny, nice and warm

    Low ragweed pollen levels
    • Precip
      4%
    • Wind
      Speed
      10 mph
    • Cloud
      Cover
      13%
    more
  • Fri

    May 8

    82°Lo 58°

    Beautiful with plenty of sun

    Ragweed Pollen Weather
    • Precip
      10%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      10%
    more
Next Previous
Hi 84° RealFeel® 84° Precipitation 1%

Day

N

E

S

W

  • SW 14 mph
  • Gusts: 26 mph

Sunny to partly cloudy, breezy and very warm

  • Max UV Index: 7 (High)
  • 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 61° RealFeel® 59° Precipitation 25%

Night

N

E

S

W

  • SSW 9 mph
  • Gusts: 20 mph

Partly cloudy and mild

  • Max UV Index: N/A
  • Thunderstorms: 10%
  • 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 - May 4

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    High

  • Mold

    Pollen

    Low

Temperature History - May 4

more Historical Weather Data >
  Today Normal Record 5/4/2014
High 84° 66° N/A 58°
Low 61° 42° N/A 48°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:38 AM with 14:12 of sunlight, then sets at 7:50 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:26 PM with 10:20 of moolight, then sets at 6:46 AM

Lancaster Weather Report

Boston: Warmest Day So Far in 2015 to Unfold Monday

May 4, 2015; 8:06 AM ET

A surge of warmth into the Northeast will create Boston's warmest day so far this year on Monday. more >

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps