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.

Partly Cloudy

76°F

24°C

Humidity 19%
Wind Speed NE 13 G 18 mph
Barometer 30.19 in (1022.4 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 11 May 3:56 pm EDT
Extended Forecast for

East Islip NY

  • Tonight

    Tonight: Clear, with a low around 48. North wind 6 to 11 mph becoming light and variable after midnight.

    Low: 48 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 68. East wind 7 to 14 mph becoming south in the afternoon.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53. Southwest wind 5 to 10 mph.

    Low: 53 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers. Mostly cloudy, with a high near 66. Southeast wind 3 to 8 mph.

    High: 66 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers. Cloudy, with a low around 56. Southeast wind 8 to 10 mph.

    Low: 56 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 64 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely. Cloudy, with a low around 57. Chance of precipitation is 70%.

    Low: 57 °F

    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 68.

    High: 68 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 48. North wind 6 to 11 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 68. East wind 7 to 14 mph becoming south in the afternoon.
Monday Night
Partly cloudy, with a low around 53. Southwest wind 5 to 10 mph.
Tuesday
A 30 percent chance of showers. Mostly cloudy, with a high near 66. Southeast wind 3 to 8 mph.
Tuesday Night
A 50 percent chance of showers. Cloudy, with a low around 56. Southeast wind 8 to 10 mph.
Wednesday
Showers likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Showers likely. Cloudy, with a low around 57. Chance of precipitation is 70%.
Thursday
A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 68.
Thursday Night
Mostly cloudy, with a low around 58.
Friday
A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 70.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 59.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 74.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Islip NY
 40.73°N 73.19°W (Elev. 16 ft)
Last Update:
3:42 pm EDT May 11, 2025
Forecast Valid:
4pm EDT May 11, 2025-6pm EDT May 18, 2025
 
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