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.

Mostly Cloudy

34°F

1°C

Humidity 56%
Wind Speed N 13 mph
Barometer 30.19 in (1022.2 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 1 Mar 12:56 pm EST
Extended Forecast for

Patchogue NY

  • This Afternoon

    This Afternoon: Cloudy, then gradually becoming mostly sunny, with a high near 35. North wind around 10 mph.

    High: 35 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 17. Wind chill values between 10 and 15. North wind around 8 mph.

    Low: 17 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 29. Wind chill values between 10 and 20. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 29 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 21. Light south wind.

    Low: 21 °F

    Mostly Clear

  • Tuesday

    Tuesday: Rain likely, possibly mixed with snow before 1pm, then rain. High near 41. Southeast wind 3 to 7 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow
    Likely then
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain. Low around 35. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 45.

    High: 45 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Cloudy, with a low around 36.

    Low: 36 °F

    Chance Rain

  • Thursday

    Thursday: A 40 percent chance of rain. Cloudy, with a high near 50.

    High: 50 °F

    Chance Rain

Detailed Forecast

This Afternoon
Cloudy, then gradually becoming mostly sunny, with a high near 35. North wind around 10 mph.
Tonight
Mostly clear, with a low around 17. Wind chill values between 10 and 15. North wind around 8 mph.
Monday
Mostly sunny, with a high near 29. Wind chill values between 10 and 20. North wind 5 to 7 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 21. Light south wind.
Tuesday
Rain likely, possibly mixed with snow before 1pm, then rain. High near 41. Southeast wind 3 to 7 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday Night
Rain. Low around 35. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 45.
Wednesday Night
A 50 percent chance of rain. Cloudy, with a low around 36.
Thursday
A 40 percent chance of rain. Cloudy, with a high near 50.
Thursday Night
A 50 percent chance of rain. Cloudy, with a low around 36.
Friday
A 40 percent chance of rain. Cloudy, with a high near 43.
Friday Night
Mostly cloudy, with a low around 35.
Saturday
Cloudy, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Patchogue NY
 40.77°N 73°W (Elev. 43 ft)
Last Update:
12:56 pm EST Mar 1, 2026
Forecast Valid:
1pm EST Mar 1, 2026-6pm EST Mar 7, 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