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

56°F

13°C

Humidity 60%
Wind Speed W 3 mph
Barometer 29.87 in (1011.3 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 2 May 12:56 pm EDT
Extended Forecast for

East Islip NY

  • This Afternoon

    This Afternoon: A 50 percent chance of showers. Mostly cloudy, with a steady temperature around 56. West wind around 5 mph.

    High: 56 °F

    Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers before 2am, then a chance of rain after 5am. Cloudy, then gradual clearing toward daybreak, with a low around 43. Light and variable wind becoming north 5 to 10 mph after midnight. Chance of precipitation is 30%.

    Low: 43 °F

    Chance Rain

  • Sunday

    Sunday: A 30 percent chance of rain before 8am. Sunny, with a high near 60. Northwest wind 13 to 18 mph, with gusts as high as 28 mph.

    High: 60 °F

    Chance Rain
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 48. Southwest wind 6 to 8 mph.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 64. South wind 10 to 15 mph.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers after 2pm. Mostly cloudy, with a high near 63.

    High: 63 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

This Afternoon
A 50 percent chance of showers. Mostly cloudy, with a steady temperature around 56. West wind around 5 mph.
Tonight
A slight chance of showers before 2am, then a chance of rain after 5am. Cloudy, then gradual clearing toward daybreak, with a low around 43. Light and variable wind becoming north 5 to 10 mph after midnight. Chance of precipitation is 30%.
Sunday
A 30 percent chance of rain before 8am. Sunny, with a high near 60. Northwest wind 13 to 18 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 48. Southwest wind 6 to 8 mph.
Monday
Sunny, with a high near 64. South wind 10 to 15 mph.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Mostly cloudy, with a low around 54.
Wednesday
A 40 percent chance of showers after 2pm. Mostly cloudy, with a high near 63.
Wednesday Night
Showers likely, mainly after 2am. Cloudy, with a low around 52. Chance of precipitation is 60%.
Thursday
Showers. High near 61. Chance of precipitation is 80%.
Thursday Night
Showers. Low around 46. Chance of precipitation is 80%.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 61.
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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:
11:19 am EDT May 2, 2026
Forecast Valid:
1pm EDT May 2, 2026-6pm EDT May 8, 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