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.

Light Rain Fog/Mist

54°F

12°C

Humidity 93%
Wind Speed SW 9 mph
Barometer 29.80 in (1009.1 mb)
Dewpoint 52°F (11°C)
Visibility 5.00 mi
Wind Chill51°F (11°C)
Last update 5 Apr 2:56 pm EDT
Extended Forecast for

Centereach NY

  • This Afternoon

    This Afternoon: Rain. Patchy fog. Steady temperature around 56. Southwest wind around 14 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Rain and
    Patchy Fog

  • Tonight

    Tonight: Showers likely before 8pm. Patchy fog between 8pm and 9pm. Otherwise, cloudy during the early evening, then gradual clearing, with a low around 39. Northwest wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Showers
    Likely and
    Patchy Fog
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 53. West wind 11 to 13 mph.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers. Partly cloudy, with a low around 38. Northwest wind 3 to 5 mph.

    Low: 38 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before 2pm. Mostly sunny, with a high near 50. West wind 6 to 13 mph.

    High: 50 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Rain. Patchy fog. Steady temperature around 56. Southwest wind around 14 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Showers likely before 8pm. Patchy fog between 8pm and 9pm. Otherwise, cloudy during the early evening, then gradual clearing, with a low around 39. Northwest wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Sunny, with a high near 53. West wind 11 to 13 mph.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 38. Northwest wind 3 to 5 mph.
Tuesday
A 20 percent chance of showers before 2pm. Mostly sunny, with a high near 50. West wind 6 to 13 mph.
Tuesday Night
Mostly clear, with a low around 30.
Wednesday
Sunny, with a high near 47.
Wednesday Night
Mostly clear, with a low around 34.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 61.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
Mostly sunny, with a high near 60.
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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:
2:55 pm EDT Apr 5, 2026
Forecast Valid:
3pm EDT Apr 5, 2026-6pm EDT Apr 12, 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