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

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

31°F

-1°C

Humidity 38%
Wind Speed NE 12 mph
Barometer 30.37 in (1028.5 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 18 Mar 11:56 am EDT
Extended Forecast for

Centereach NY

  • This Afternoon

    This Afternoon: Mostly cloudy, then gradually becoming sunny, with a high near 36. North wind 5 to 8 mph becoming calm.

    High: 36 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Increasing clouds, with a low around 26. Calm wind.

    Low: 26 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 43. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 43 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 50. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 50 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

  • Saturday

    Saturday: A 40 percent chance of rain before 2pm. Partly sunny, with a high near 52.

    High: 52 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 40 percent chance of rain after 8am. Mostly cloudy, with a high near 54.

    High: 54 °F

    Chance Rain

Detailed Forecast

This Afternoon
Mostly cloudy, then gradually becoming sunny, with a high near 36. North wind 5 to 8 mph becoming calm.
Tonight
Increasing clouds, with a low around 26. Calm wind.
Thursday
Mostly sunny, with a high near 43. Calm wind becoming southeast around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 33. Calm wind.
Friday
Mostly sunny, with a high near 50. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 39.
Saturday
A 40 percent chance of rain before 2pm. Partly sunny, with a high near 52.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
A 40 percent chance of rain after 8am. Mostly cloudy, with a high near 54.
Sunday Night
A 30 percent chance of rain before 2am. Mostly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 49.
Monday Night
Mostly clear, with a low around 28.
Tuesday
Mostly sunny, with a high near 43.
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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:
6:17 am EDT Mar 18, 2026
Forecast Valid:
12pm EDT Mar 18, 2026-6pm EDT Mar 24, 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