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.

Rain Fog/Mist

45°F

7°C

Humidity 100%
Wind Speed E 13 G 22 mph
Barometer 29.84 in (1010.5 mb)
Dewpoint 45°F (7°C)
Visibility 6.00 mi
Wind Chill39°F (4°C)
Last update 10 Jan 8:56 pm EST
Extended Forecast for

Old Field NY

  • Tonight

    Tonight: Rain, mainly before 4am. Patchy fog between 1am and 4am. Low around 40. Northeast wind 5 to 15 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain then
    Rain Likely
    and Patchy
    Fog

  • Sunday

    Sunday: A chance of rain before 10am, then a chance of snow showers after 4pm. Cloudy through mid morning, then gradual clearing, with a high near 42. West wind 9 to 17 mph. Chance of precipitation is 30%.

    High: 42 °F

    Chance Rain
    then Chance
    Snow Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of snow showers, mainly before 7pm. Partly cloudy, with a low around 31. Wind chill values between 15 and 25. Windy, with a west wind 24 to 30 mph.

    Low: 31 °F

    Windy. Chance
    Snow Showers
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 39. Wind chill values between 20 and 30. Breezy, with a west wind 14 to 23 mph.

    High: 39 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 34. Southwest wind 13 to 15 mph.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 44.

    High: 44 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance Rain

Detailed Forecast

Tonight
Rain, mainly before 4am. Patchy fog between 1am and 4am. Low around 40. Northeast wind 5 to 15 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A chance of rain before 10am, then a chance of snow showers after 4pm. Cloudy through mid morning, then gradual clearing, with a high near 42. West wind 9 to 17 mph. Chance of precipitation is 30%.
Sunday Night
A 30 percent chance of snow showers, mainly before 7pm. Partly cloudy, with a low around 31. Wind chill values between 15 and 25. Windy, with a west wind 24 to 30 mph.
Monday
Mostly sunny, with a high near 39. Wind chill values between 20 and 30. Breezy, with a west wind 14 to 23 mph.
Monday Night
Mostly clear, with a low around 34. Southwest wind 13 to 15 mph.
Tuesday
Sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Cloudy, with a high near 44.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 32.
Thursday
Partly sunny, with a high near 36.
Thursday Night
Partly cloudy, with a low around 25.
Friday
Mostly sunny, with a high near 33.
Friday Night
Mostly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 37.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Old Field NY
 40.96°N 73.14°W (Elev. 30 ft)
Last Update:
8:12 pm EST Jan 10, 2026
Forecast Valid:
9pm EST Jan 10, 2026-6pm EST Jan 17, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation