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

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

41°F

5°C

Humidity 60%
Wind Speed SW 12 mph
Barometer 29.99 in (1015.7 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 22 Jan 3:56 am EST
Extended Forecast for

Patchogue NY

  • Overnight

    Overnight: A slight chance of rain and snow. Mostly cloudy, with a steady temperature around 39. Southwest wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 39 °F

    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 44. West wind 10 to 14 mph, with gusts as high as 25 mph.

    High: 44 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26. West wind around 9 mph, with gusts as high as 20 mph.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 36. Wind chill values between 20 and 25. West wind 7 to 14 mph, with gusts as high as 28 mph.

    High: 36 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 9. Northwest wind 10 to 14 mph, with gusts as high as 26 mph.

    Low: 9 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 18.

    High: 18 °F

    Cold

  • Saturday Night

    Saturday Night: A 50 percent chance of snow after 1am. Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow. High near 26. Chance of precipitation is 90%.

    High: 26 °F

    Snow

  • Sunday Night

    Sunday Night: Snow. Low around 19. Chance of precipitation is 80%.

    Low: 19 °F

    Snow

Detailed Forecast

Overnight
A slight chance of rain and snow. Mostly cloudy, with a steady temperature around 39. Southwest wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 44. West wind 10 to 14 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 26. West wind around 9 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 36. Wind chill values between 20 and 25. West wind 7 to 14 mph, with gusts as high as 28 mph.
Friday Night
Partly cloudy, with a low around 9. Northwest wind 10 to 14 mph, with gusts as high as 26 mph.
Saturday
Mostly sunny and cold, with a high near 18.
Saturday Night
A 50 percent chance of snow after 1am. Mostly cloudy, with a low around 11.
Sunday
Snow. High near 26. Chance of precipitation is 90%.
Sunday Night
Snow. Low around 19. Chance of precipitation is 80%.
Monday
A 40 percent chance of snow. Mostly cloudy, with a high near 28.
Monday Night
Partly cloudy, with a low around 12.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Partly cloudy, with a low around 15.
Wednesday
Partly sunny, with a high near 28.
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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:
1:01 am EST Jan 22, 2026
Forecast Valid:
4am EST Jan 22, 2026-6pm EST Jan 28, 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