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

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

59°F

15°C

Humidity 83%
Wind Speed NE 6 mph
Barometer 30.16 in (1021.3 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 14 Jun 11:56 pm EDT
Extended Forecast for

Old Field NY

  • Overnight

    Overnight: A 20 percent chance of light rain. Cloudy, with a low around 59. Northeast wind 11 to 13 mph.

    Low: 59 °F

    Slight Chance
    Light Rain

  • Sunday

    Sunday: Mostly cloudy, with a high near 66. East wind 9 to 11 mph.

    High: 66 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 60. East wind around 7 mph.

    Low: 60 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 69. East wind 9 to 11 mph.

    High: 69 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 61. East wind 3 to 8 mph.

    Low: 61 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 71.

    High: 71 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers before 8am. Mostly cloudy, with a high near 77.

    High: 77 °F

    Chance
    Showers then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of light rain. Cloudy, with a low around 59. Northeast wind 11 to 13 mph.
Sunday
Mostly cloudy, with a high near 66. East wind 9 to 11 mph.
Sunday Night
Mostly cloudy, with a low around 60. East wind around 7 mph.
Monday
Mostly cloudy, with a high near 69. East wind 9 to 11 mph.
Monday Night
Mostly cloudy, with a low around 61. East wind 3 to 8 mph.
Tuesday
Mostly cloudy, with a high near 71.
Tuesday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 64.
Wednesday
A 30 percent chance of showers before 8am. Mostly cloudy, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 69.
Juneteenth
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 82.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Friday
Sunny, with a high near 79.
Friday Night
Mostly clear, with a low around 66.
Saturday
Mostly sunny, with a high near 79.
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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:
9:07 pm EDT Jun 14, 2025
Forecast Valid:
12am EDT Jun 15, 2025-6pm EDT Jun 21, 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