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.

Fair

40°F

4°C

Humidity 63%
Wind Speed NW 15 mph
Barometer 30.13 in (1020.3 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 1 Dec 2:56 am EST
Extended Forecast for

Patchogue NY

  • Overnight

    Overnight: Mostly clear, with a low around 33. West wind around 11 mph, with gusts as high as 23 mph.

    Low: 33 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 42. Wind chill values between 25 and 35. Northwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 42 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 28. North wind around 5 mph becoming calm in the evening.

    Low: 28 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Rain. High near 48. Southeast wind 6 to 11 mph becoming north in the afternoon. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 48 °F

    Rain

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 29. Northwest wind 10 to 14 mph, with gusts as high as 29 mph.

    Low: 29 °F

    Chance Rain

  • Wednesday

    Wednesday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 33. West wind around 11 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 42. Wind chill values between 25 and 35. Northwest wind 8 to 13 mph, with gusts as high as 23 mph.
Monday Night
Increasing clouds, with a low around 28. North wind around 5 mph becoming calm in the evening.
Tuesday
Rain. High near 48. Southeast wind 6 to 11 mph becoming north in the afternoon. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tuesday Night
A 50 percent chance of rain before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 29. Northwest wind 10 to 14 mph, with gusts as high as 29 mph.
Wednesday
Sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
Partly sunny, with a high near 42.
Thursday Night
Mostly clear, with a low around 19.
Friday
Mostly sunny, with a high near 38.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 28.
Saturday
Rain and snow likely. Mostly cloudy, with a high near 42. Chance of precipitation is 60%.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Patchogue NY
 40.77°N 73°W (Elev. 43 ft)
Last Update:
1:19 am EST Dec 1, 2025
Forecast Valid:
3am EST Dec 1, 2025-6pm EST Dec 7, 2025
 
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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