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

37°F

3°C

Humidity 93%
Wind Speed W 6 mph
Barometer 30.19 in (1022.3 mb)
Dewpoint 35°F (2°C)
Visibility 9.00 mi
Wind Chill32°F (0°C)
Last update 4 Mar 3:56 am EST
Extended Forecast for

Centereach NY

  • Overnight

    Overnight: A 20 percent chance of rain. Patchy fog. Otherwise, cloudy, with a steady temperature around 35. Calm wind.

    Low: 35 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 45. Calm wind.

    High: 45 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after 4am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Patchy Fog
    then Slight
    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: Rain, mainly after 7am. Patchy fog before 10am. High near 41. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 41 °F

    Rain and
    Patchy Fog

  • Thursday Night

    Thursday Night: Rain. Low around 34. Northeast wind 9 to 11 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 34 °F

    Rain

  • Friday

    Friday: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 43.

    High: 43 °F

    Chance Rain

  • Friday Night

    Friday Night: Cloudy, with a low around 34.

    Low: 34 °F

    Cloudy

  • Saturday

    Saturday: Cloudy, with a high near 51.

    High: 51 °F

    Cloudy

  • Saturday Night

    Saturday Night: Showers likely, mainly before 1am. Cloudy, with a low around 41. Chance of precipitation is 60%.

    Low: 41 °F

    Showers
    Likely

Detailed Forecast

Overnight
A 20 percent chance of rain. Patchy fog. Otherwise, cloudy, with a steady temperature around 35. Calm wind.
Wednesday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 45. Calm wind.
Wednesday Night
A 20 percent chance of rain after 4am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 32. Calm wind.
Thursday
Rain, mainly after 7am. Patchy fog before 10am. High near 41. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 34. Northeast wind 9 to 11 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 43.
Friday Night
Cloudy, with a low around 34.
Saturday
Cloudy, with a high near 51.
Saturday Night
Showers likely, mainly before 1am. Cloudy, with a low around 41. Chance of precipitation is 60%.
Sunday
Partly sunny, with a high near 53.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Sunny, with a high near 56.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Mostly sunny, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Centereach NY
 40.87°N 73.07°W (Elev. 98 ft)
Last Update:
3:12 am EST Mar 4, 2026
Forecast Valid:
4am EST Mar 4, 2026-6pm EDT Mar 10, 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