• Today

    Aug 28

    83°Lo 67°

    Mostly sunny

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

    Aug 29

    89°Lo 65°

    Partly sunny

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

    Aug 30

    81°Lo 66°

    Humid with plenty of sunshine

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

    Aug 31

    84°Lo 67°

    A thunderstorm in spots

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

    Sep 1

    80°Lo 62°

    Partly sunny and less humid

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
3pm
4pm 5pm 6pm 7pm 8pm 9pm 10pm
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Forecast
Sunny
Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Clear
Mostly Clear
Mostly Clear
Temp (°F) 83° 81° 80° 78° 76° 73° 71° 71°
RealFeel® 87° 83° 80° 77° 75° 73° 70° 70°
Humidity 51% 52% 54% 58% 66% 72% 78% 81%
   
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Wind (mph) 8 SSE 8 SSE 8 SSE 8 SSE 7 SSE 5 SSE 5 S 5 S
UV Index 5 3 2 1 0 0 0 0
Cloud Cover 9% 9% 11% 17% 23% 10% 10% 10%
Dew Point 63° 62° 62° 62° 64° 64° 64° 65°
Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F

Temperature History - Aug 28

more Historical Weather Data >
  Today Normal Record 8/28/2015
High 83° 79° 89° (1991) 81°
Low 67° 64° 49° (1986) 61°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:16 AM with 13:14 of sunlight, then sets at 7:30 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:25 AM with 14:39 of moolight, then sets at 5:04 PM

Holtsville Weather Report

September to start on cooler, less humid note in northeastern US

August 28, 2016; 11:28 AM ET

Brief relief from heat and humidity will arrive in the northeastern United States at the start of September. more >

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps