• Today

    Apr 21

    65°Lo 46°

    Warmer; a little morning rain

    Beneficial weather for migraines
    • Hi
      RealFeel
      64°
    • UV
      6 - High
    • Cloud
      Cover
      70%
    more
  • Wed

    Apr 22

    62°Lo 39°

    Afternoon thundershowers

    Beneficial weather for migraines
    • Hi
      RealFeel
      62°
    • UV
      6 - High
    • Cloud
      Cover
      69%
  • Thu

    Apr 23

    54°Lo 36°

    Cooler with some sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      49°
    • UV
      6 - High
    • Cloud
      Cover
      39%
    more
  • Fri

    Apr 24

    51°Lo 35°

    Partly sunny, breezy and cool

    Beneficial weather for migraines
    • Hi
      RealFeel
      45°
    • UV
      6 - High
    • Cloud
      Cover
      46%
    more
  • Sat

    Apr 25

    56°Lo 37°

    Intervals of clouds and sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      54°
    • UV
      6 - High
    • Cloud
      Cover
      46%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Temp (°F) 47° 46° 46° 47° 49° 52° 56° 57°
RealFeel® 44° 42° 43° 42° 44° 48° 53° 56°
Humidity 68% 71% 72% 71% 67% 61% 55% 51%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
2%
 
2%
 
2%
 
2%
 
2%
 
1%
 
1%
 
1%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 7 SW 7 SW 7 SW 8 SW 9 SSW 10 SSW 13 SSW 13 SSW
UV Index 0 0 0 0 0 1 2 3
Cloud Cover 10% 10% 10% 10% 10% 45% 45% 45%
Dew Point 37° 37° 37° 38° 38° 39° 40° 39°
Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Apr 22

more Historical Weather Data >
  Today Normal Record 4/22/2014
High 62° 60° 75° (2007) 63°
Low 39° 43° 33° (1984) 44°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:03 AM with 13:36 of sunlight, then sets at 7:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:11 AM with 14:42 of moolight, then sets at 11:53 PM

Holtsville Weather Report

NYC: Cooler Air to Sweep Away Warmth This Week

April 21, 2015; 5:54 AM ET

Cooler air will push into the New York City area during the middle and latter part of the week. more >

Wed. Migraine Headache

Wed. UV Index