Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

73°F

23°C

Humidity 96%
Wind Speed W 3 mph
Barometer 30.02 in (1016.6 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 8 Aug 1:56 am EDT
Extended Forecast for

Old Field NY

Heat Advisory August 8, 02:48am until August 8, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 8, 02:48am until August 8, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Overnight

    Low: 74 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 87. West wind 8 to 10 mph.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 11pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 76. Southwest wind 7 to 9 mph.

    Low: 76 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 87. West wind around 8 mph.

    High: 87 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. North wind 3 to 7 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers after 2pm.  Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 74. Southwest wind around 5 mph.
Saturday
Mostly sunny, with a high near 87. West wind 8 to 10 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 76. Southwest wind 7 to 9 mph.
Sunday
Mostly sunny, with a high near 87. West wind around 8 mph.
Sunday Night
Mostly clear, with a low around 73. North wind 3 to 7 mph.
Monday
Sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 75.
Tuesday
A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 86.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 72.
Wednesday
Partly sunny, with a high near 83.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 72.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 83.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 71.
Friday
Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Old Field NY
 40.96°N 73.14°W (Elev. 30 ft)
2:28 am EDT Aug 8, 2026
2am EDT Aug 8, 2026-6pm EDT Aug 14, 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