• Tonight

    Mar 2

    Lo 12°

    Mainly clear and very cold

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Tue

    Mar 3

    33°Lo 31°

    Snow late in the afternoon

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

    Mar 4

    42°Lo 28°

    Rain; fog in the morning

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

    Mar 5

    30°Lo 10°

    Snowy, breezy and colder

    Low ragweed pollen levels
    • Precip
      67%
    • Wind
      Speed
      14 mph
    • Cloud
      Cover
      99%
    more
  • Fri

    Mar 6

    27°Lo 17°

    Sunny and very cold

    Ragweed Pollen Weather
    • Precip
      9%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      10%
    more
Next Previous
Hi 42° RealFeel® 35° Precipitation 67%

Day

N

E

S

W

  • NW 10 mph
  • Gusts: 15 mph

Periods of rain; areas of morning fog

  • Max UV Index: 1 (Low)
  • Thunderstorms: 3%
  • Precipitation: 0.33 in
  • Rain: 0.33 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 5.5 hrs
  • Hours of Rain: 5.5 hrs
Lo 28° RealFeel® 10° Precipitation 75%

Night

N

E

S

W

  • WNW 12 mph
  • Gusts: 20 mph

Rain mixing with, then changing to snow, accumulating 1-3 inches

  • Max UV Index: N/A
  • Thunderstorms: 3%
  • Precipitation: 0.31 in
  • Rain: 0.18 in
  • Snow: 1.6 in
  • Ice: 0 in
  • Hours of Precipitation: 6 hrs
  • Hours of Rain: 3 hrs

Temperature History - Mar 4

more Historical Weather Data >
  Today Normal Record 3/4/2014
High 42° 44° 57° (1991) 27°
Low 28° 28° (2009) 12°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:22 AM with 11:25 of sunlight, then sets at 5:47 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:02 PM with 13:03 of moolight, then sets at 6:05 AM

Holtsville Weather Report

NYC: Storm to Accompany Midweek Warmup

March 2, 2015; 10:07 AM ET

The warmest weather since early January will surge into the New York City area at midweek with temperatures forecast to reach the upper 40s F. more >

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Wed. Dust & Dander

Wed. Wind Maps