Showers and Storms in the East; Dangerously Hot and Dry in the West

A frontal boundary will bring scattered showers and storms to portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Intermountain West and expand into the Central U.S. by early next week. Elevated wildfire conditions will develop across portions of the Northern/Central Plains and air quality issues will persist in the Northwest. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

77°F

25°C

Humidity 96%
Wind Speed SW 8 mph
Barometer 30.11 in (1019.3 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 6 Aug 2:56 am EDT
Extended Forecast for

Centereach NY

Heat Advisory August 6, 11:00am until August 7, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Overnight

    Overnight: Mostly cloudy, with a low around 74. South wind around 5 mph.

    Low: 74 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 88. Heat index values as high as 102. Southwest wind 6 to 11 mph.

    High: 88 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. Southwest wind 5 to 9 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 89. Heat index values as high as 102. West wind 5 to 9 mph.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms before 2am.  Mostly cloudy, with a low around 74. Southwest wind 5 to 7 mph.

    Low: 74 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 74. South wind around 5 mph.
Thursday
Mostly sunny, with a high near 88. Heat index values as high as 102. Southwest wind 6 to 11 mph.
Thursday Night
Mostly clear, with a low around 75. Southwest wind 5 to 9 mph.
Friday
Sunny, with a high near 89. Heat index values as high as 102. West wind 5 to 9 mph.
Friday Night
A 50 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. Southwest wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 88.
Saturday Night
Partly cloudy, with a low around 74.
Sunday
Sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 73.
Monday
Sunny, with a high near 89.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 74.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 90.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 72.
Wednesday
Partly sunny, with a high near 86.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Centereach NY
 40.85°N 73.08°W (Elev. 102 ft)
3:15 am EDT Aug 6, 2026
3am EDT Aug 6, 2026-6pm EDT Aug 12, 2026
 
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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