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Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

72°F

22°C

Humidity 94%
Wind Speed Calm
Barometer 29.61 in (1002.8 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 29 Jul 8:56 pm EDT
Extended Forecast for

Old Field NY

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Northwest wind 8 to 10 mph. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 74. North wind 9 to 13 mph. Chance of precipitation is 50%.

    High: 74 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 67. Northwest wind 8 to 11 mph.

    Low: 67 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 79. Northwest wind 5 to 7 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 70. Southwest wind around 5 mph.

    Low: 70 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 71.

    Low: 71 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 79.

    High: 79 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Northwest wind 8 to 10 mph. Chance of precipitation is 40%.
Thursday
A chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 74. North wind 9 to 13 mph. Chance of precipitation is 50%.
Thursday Night
Partly cloudy, with a low around 67. Northwest wind 8 to 11 mph.
Friday
Sunny, with a high near 79. Northwest wind 5 to 7 mph.
Friday Night
Partly cloudy, with a low around 70. Southwest wind around 5 mph.
Saturday
Partly sunny, with a high near 80.
Saturday Night
Mostly cloudy, with a low around 71.
Sunday
Mostly cloudy, with a high near 79.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 70.
Monday
A 40 percent chance of showers. Partly sunny, with a high near 79.
Monday Night
Mostly cloudy, with a low around 70.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 70.
Wednesday
Sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Old Field NY
 40.96°N 73.14°W (Elev. 30 ft)
Last Update:
3:44 pm EDT Jul 29, 2026
Forecast Valid:
9pm EDT Jul 29, 2026-6pm EDT Aug 5, 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