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

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

57°F

14°C

Humidity 64%
Wind Speed N 7 mph
Barometer 30.23 in (1023.8 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 9 Oct 1:56 am EDT
Extended Forecast for

Islip NY

  • Overnight

    Overnight: Clear, with a low around 49. North wind around 10 mph, with gusts as high as 23 mph.

    Low: 49 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 61. North wind 11 to 14 mph.

    High: 61 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 41. Northeast wind around 6 mph.

    Low: 41 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 63. Northeast wind 5 to 7 mph becoming southeast in the afternoon.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. South wind 3 to 6 mph.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Chance Rain

  • Sunday

    Sunday: Rain likely, mainly after 2pm. Mostly cloudy, with a high near 64. Breezy. Chance of precipitation is 60%.

    High: 64 °F

    Rain Likely
    and Breezy

  • Sunday Night

    Sunday Night: Rain likely. Mostly cloudy, with a low around 53. Windy. Chance of precipitation is 70%.

    Low: 53 °F

    Rain Likely
    and Windy

Detailed Forecast

Overnight
Clear, with a low around 49. North wind around 10 mph, with gusts as high as 23 mph.
Thursday
Sunny, with a high near 61. North wind 11 to 14 mph.
Thursday Night
Clear, with a low around 41. Northeast wind around 6 mph.
Friday
Sunny, with a high near 63. Northeast wind 5 to 7 mph becoming southeast in the afternoon.
Friday Night
Partly cloudy, with a low around 52. South wind 3 to 6 mph.
Saturday
Partly sunny, with a high near 67.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 55.
Sunday
Rain likely, mainly after 2pm. Mostly cloudy, with a high near 64. Breezy. Chance of precipitation is 60%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 53. Windy. Chance of precipitation is 70%.
Columbus Day
Rain likely. Mostly cloudy, with a high near 64. Windy. Chance of precipitation is 70%.
Monday Night
Rain likely. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 66.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Islip NY
 40.73°N 73.22°W (Elev. 7 ft)
Last Update:
1:58 am EDT Oct 9, 2025
Forecast Valid:
2am EDT Oct 9, 2025-6pm EDT Oct 15, 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