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

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

55°F

13°C

Humidity 83%
Wind Speed SW 15 mph
Barometer 30.09 in (1018.8 mb)
Dewpoint 50°F (10°C)
Visibility 9.00 mi
Wind Chill51°F (11°C)
Last update 13 Apr 10:56 am EDT
Extended Forecast for

Centereach NY

  • Today

    Today: Partly sunny, with a high near 74. Southwest wind around 16 mph, with gusts as high as 30 mph.

    High: 74 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. West wind 5 to 11 mph.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75. Calm wind becoming south 5 to 9 mph in the morning.

    High: 75 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 55. Southwest wind 5 to 8 mph.

    Low: 55 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 77. Southwest wind 5 to 10 mph.

    High: 77 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.

    Low: 56 °F

    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 74. Southwest wind around 16 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 53. West wind 5 to 11 mph.
Tuesday
Mostly sunny, with a high near 75. Calm wind becoming south 5 to 9 mph in the morning.
Tuesday Night
A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 55. Southwest wind 5 to 8 mph.
Wednesday
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 77. Southwest wind 5 to 10 mph.
Wednesday Night
A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 73.
Thursday Night
Mostly cloudy, with a low around 54.
Friday
Partly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 50.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 65.
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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:
9:09 am EDT Apr 13, 2026
Forecast Valid:
11am EDT Apr 13, 2026-6pm EDT Apr 19, 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