Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

77°F

25°C

Humidity 74%
Wind Speed SW 9 mph
Barometer 30.24 in (1023.9 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Sep 10:56 am EDT
Extended Forecast for

Old Field NY

  • Today

    Today: Partly sunny, with a high near 77. South wind 7 to 9 mph.

    High: 77 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 2am, then a slight chance of showers after 2am.  Mostly cloudy, with a low around 70. South wind 9 to 11 mph.  Chance of precipitation is 50%.

    Low: 70 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 77. North wind 9 to 11 mph.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. North wind 11 to 16 mph.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 68. Northeast wind 5 to 14 mph.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers, mainly after 8am.  High near 70. Chance of precipitation is 80%.

    High: 70 °F

    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before 2am.  Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

  • Monday

    Monday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 77. South wind 7 to 9 mph.
Tonight
A slight chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 70. South wind 9 to 11 mph. Chance of precipitation is 50%.
Friday
Sunny, with a high near 77. North wind 9 to 11 mph.
Friday Night
Partly cloudy, with a low around 62. North wind 11 to 16 mph.
Saturday
Mostly sunny, with a high near 68. Northeast wind 5 to 14 mph.
Saturday Night
Mostly cloudy, with a low around 63.
Sunday
Showers, mainly after 8am. High near 70. Chance of precipitation is 80%.
Sunday Night
Showers, mainly before 2am. Low around 62. Chance of precipitation is 80%.
Monday
Partly sunny, with a high near 68.
Monday Night
Mostly cloudy, with a low around 60. Breezy.
Tuesday
Partly sunny, with a high near 67. Breezy.
Tuesday Night
Partly cloudy, with a low around 59. Breezy.
Wednesday
Mostly sunny, with a high near 67. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Old Field NY
 40.96°N 73.14°W (Elev. 30 ft)
11:11 am EDT Sep 17, 2026
11am EDT Sep 17, 2026-6pm EDT Sep 23, 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