National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

37°F

3°C

Humidity 89%
Wind Speed E 6 mph
Barometer 30.11 in (1019.7 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 21 Feb 11:56 pm EST
Extended Forecast for

Centereach NY

Blizzard Warning February 22, 01:00pm until February 23, 06:00pm
Coastal Flood Warning February 23, 12:00am until February 23, 05:00am
Click here for hazard details and duration
Blizzard Warning
Coastal Flood Warning

  • Overnight

    Overnight: A 40 percent chance of snow, mainly after 4am. Cloudy, with a steady temperature around 33. Calm wind becoming east around 6 mph.

    Low: 33 °F

    Chance Snow

  • Sunday

    Sunday: Snow, mainly after 1pm. High near 37. Wind chill values between 20 and 25. East wind 7 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 37 °F

    Chance Snow
    then Snow

  • Sunday Night

    Sunday Night: Snow. The snow could be heavy at times. Areas of blowing snow after 10pm. Steady temperature around 31. Wind chill values between 15 and 20. Windy, with a northeast wind 18 to 23 mph increasing to 28 to 33 mph after midnight. Winds could gust as high as 49 mph. Chance of precipitation is 100%. New snow accumulation of 10 to 14 inches possible.

    Low: 31 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Monday

    Monday: Snow. The snow could be heavy at times. Areas of blowing snow. Steady temperature around 31. Wind chill values between 15 and 20. Windy, with a north wind 23 to 32 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    High: 31 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Monday Night

    Monday Night: A 40 percent chance of snow before 10pm. Areas of blowing snow before 1am. Mostly cloudy, with a low around 22. Northwest wind 8 to 17 mph, with gusts as high as 33 mph.

    Low: 22 °F

    Chance Snow
    and Areas
    Blowing Snow
    then Areas
    Blowing Snow

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 17.

    Low: 17 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A chance of rain and snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 39. Chance of precipitation is 50%.

    High: 39 °F

    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Chance Rain

Detailed Forecast

Overnight
A 40 percent chance of snow, mainly after 4am. Cloudy, with a steady temperature around 33. Calm wind becoming east around 6 mph.
Sunday
Snow, mainly after 1pm. High near 37. Wind chill values between 20 and 25. East wind 7 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Sunday Night
Snow. The snow could be heavy at times. Areas of blowing snow after 10pm. Steady temperature around 31. Wind chill values between 15 and 20. Windy, with a northeast wind 18 to 23 mph increasing to 28 to 33 mph after midnight. Winds could gust as high as 49 mph. Chance of precipitation is 100%. New snow accumulation of 10 to 14 inches possible.
Monday
Snow. The snow could be heavy at times. Areas of blowing snow. Steady temperature around 31. Wind chill values between 15 and 20. Windy, with a north wind 23 to 32 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Monday Night
A 40 percent chance of snow before 10pm. Areas of blowing snow before 1am. Mostly cloudy, with a low around 22. Northwest wind 8 to 17 mph, with gusts as high as 33 mph.
Tuesday
Mostly sunny, with a high near 30.
Tuesday Night
Increasing clouds, with a low around 17.
Wednesday
A chance of rain and snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 39. Chance of precipitation is 50%.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 30.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 41.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 29.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 39.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Mostly sunny, with a high near 42.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Centereach NY
 40.87°N 73.07°W (Elev. 98 ft)
Last Update:
3:48 pm EST Feb 21, 2026
Forecast Valid:
12am EST Feb 22, 2026-6pm EST Feb 28, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation