• Today

    May 26

    85°Lo 58°

    Partly sunny and very warm

    Low ragweed pollen levels
    • Grass
      Pollen
      5 - High
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      5 - High
    more
  • Fri

    May 27

    78°Lo 62°

    Partly sunny and humid

    Low ragweed pollen levels
    • Grass
      Pollen
      5 - High
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      5 - High
  • Sat

    May 28

    78°Lo 62°

    Humid with clouds and sun

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

    May 29

    78°Lo 61°

    Periods of clouds and sun

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

    May 30

    69°Lo 60°

    Not as warm with a t-storm

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 78° RealFeel® 84° Precipitation 25%

Day

N

E

S

W

  • S 7 mph
  • Gusts: 13 mph

Humid with intervals of clouds and sunshine; high levels of ozone will lead to poor air quality

  • Max UV Index: 7 (High)
  • Thunderstorms: 16%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 62° RealFeel® 60° Precipitation 25%

Night

N

E

S

W

  • SSW 8 mph
  • Gusts: 12 mph

Turning out clear

  • Max UV Index: N/A
  • Thunderstorms: 5%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Holtsville Pollen Levels - May 27

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Tree Pollen

    High

  • Ragweed Pollen

    Low

  • Mold

    Low

  • Grass Pollen

    High

Temperature History - May 27

more Historical Weather Data >
  Today Normal Record 5/27/2015
High 78° 71° 88° (2014) 74°
Low 62° 53° 43° (2013) 63°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:25 AM with 14:49 of sunlight, then sets at 8:14 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:02 AM with 10:35 of moolight, then sets at 10:37 AM

Holtsville Weather Report

Eastern US weather to feel like summertime into Memorial Day

May 26, 2016; 11:34 AM ET

Summerlike warmth will make it feel like the 90s F at times in the eastern United States through Memorial Day weekend, despite localized rainfall. more >

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps