Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

58°F

14°C

Humidity 97%
Wind Speed N 7 mph
Barometer 30.05 in (1017.6 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 4 Oct 10:56 pm EDT
Extended Forecast for

East Islip NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. North wind 3 to 5 mph.

    Low: 54 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 68. Breezy, with a northwest wind 7 to 12 mph increasing to 16 to 21 mph in the afternoon.

    High: 68 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Monday Night

    Monday Night: Clear, with a low around 45. Northwest wind 11 to 17 mph.

    Low: 45 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 61. Northwest wind around 10 mph.

    High: 61 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46. West wind around 5 mph becoming calm  in the evening.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 54. North wind 3 to 5 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 68. Breezy, with a northwest wind 7 to 12 mph increasing to 16 to 21 mph in the afternoon.
Monday Night
Clear, with a low around 45. Northwest wind 11 to 17 mph.
Tuesday
Sunny, with a high near 61. Northwest wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 46. West wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 68.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
East Islip NY
 40.73°N 73.19°W (Elev. 16 ft)
7:32 pm EDT Oct 4, 2026
11pm EDT Oct 4, 2026-6pm EDT Oct 11, 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