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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Centereach NY

  • Overnight

    Overnight: A chance of rain and snow before 4am. Mostly cloudy, with a steady temperature around 38. Southwest wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 38 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: Increasing clouds, with a high near 44. West wind 9 to 14 mph, with gusts as high as 24 mph.

    High: 44 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26. West wind around 8 mph.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 36. Wind chill values between 20 and 25. West wind 6 to 14 mph, with gusts as high as 28 mph.

    High: 36 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 9. Northwest wind 10 to 14 mph, with gusts as high as 26 mph.

    Low: 9 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 18.

    High: 18 °F

    Cold

  • Saturday Night

    Saturday Night: A 50 percent chance of snow after 1am. Mostly cloudy, with a low around 10.

    Low: 10 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow. High near 25. Chance of precipitation is 90%.

    High: 25 °F

    Snow

  • Sunday Night

    Sunday Night: Snow. Low around 18. Chance of precipitation is 80%.

    Low: 18 °F

    Snow

Detailed Forecast

Overnight
A chance of rain and snow before 4am. Mostly cloudy, with a steady temperature around 38. Southwest wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Thursday
Increasing clouds, with a high near 44. West wind 9 to 14 mph, with gusts as high as 24 mph.
Thursday Night
Partly cloudy, with a low around 26. West wind around 8 mph.
Friday
Mostly sunny, with a high near 36. Wind chill values between 20 and 25. West wind 6 to 14 mph, with gusts as high as 28 mph.
Friday Night
Partly cloudy, with a low around 9. Northwest wind 10 to 14 mph, with gusts as high as 26 mph.
Saturday
Mostly sunny and cold, with a high near 18.
Saturday Night
A 50 percent chance of snow after 1am. Mostly cloudy, with a low around 10.
Sunday
Snow. High near 25. Chance of precipitation is 90%.
Sunday Night
Snow. Low around 18. Chance of precipitation is 80%.
Monday
A 40 percent chance of snow. Mostly cloudy, with a high near 27.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Partly cloudy, with a low around 14.
Wednesday
Partly sunny, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Centereach NY
 40.87°N 73.07°W (Elev. 98 ft)
Last Update:
1:01 am EST Jan 22, 2026
Forecast Valid:
3am EST Jan 22, 2026-6pm EST Jan 28, 2026
 
Forecast Discussion
 
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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