Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

60°F

16°C

Humidity 75%
Wind Speed SW 10 mph
Barometer 29.92 in (1013.0 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 7 Oct 9:56 pm EDT
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Tonight

    Tonight: Mostly clear, with a low around 58. Southwest wind around 13 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 73. West wind 13 to 15 mph.

    High: 73 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. Northwest wind 6 to 9 mph.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 69. West wind 8 to 13 mph.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 50. Northwest wind 3 to 7 mph.

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers.  High near 67. Chance of precipitation is 90%.

    High: 67 °F

    Showers

  • Sunday Night

    Sunday Night: Showers, with thunderstorms also possible after 2am.  Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 58. Southwest wind around 13 mph.
Thursday
Sunny, with a high near 73. West wind 13 to 15 mph.
Thursday Night
Mostly clear, with a low around 51. Northwest wind 6 to 9 mph.
Friday
Sunny, with a high near 69. West wind 8 to 13 mph.
Friday Night
Mostly clear, with a low around 50. Northwest wind 3 to 7 mph.
Saturday
Sunny, with a high near 69.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Showers. High near 67. Chance of precipitation is 90%.
Sunday Night
Showers, with thunderstorms also possible after 2am. Low around 61. Chance of precipitation is 80%.
Columbus Day
Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 2pm. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 57.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 67.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 47. Breezy.
Wednesday
Partly sunny, with a high near 59. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.81°N 73.11°W (Elev. 98 ft)
2:28 pm EDT Oct 7, 2026
10pm EDT Oct 7, 2026-6pm EDT Oct 14, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database