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

43°F

6°C

Humidity 80%
Wind Speed SW 13 mph
Barometer 29.68 in (1005.2 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 14 Jan 6:56 am EST
Extended Forecast for

Patchogue NY

  • Today

    Today: Mostly cloudy, with a high near 48. Southwest wind 6 to 10 mph.

    High: 48 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 40 percent chance of showers, mainly after 10pm. Cloudy, with a steady temperature around 42. Light and variable wind becoming southwest around 6 mph in the evening.

    Low: 42 °F

    Chance
    Showers

  • Thursday

    Thursday: A slight chance of rain and snow showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 30 by 5pm. Wind chill values between 20 and 30. West wind 7 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    High: 40 °F⇓

    Slight Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19. Wind chill values between 5 and 15. West wind around 14 mph, with gusts as high as 30 mph.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 37. West wind 13 to 16 mph, with gusts as high as 31 mph.

    High: 37 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a steady temperature around 32.

    Low: 32 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 48. Southwest wind 6 to 10 mph.
Tonight
A 40 percent chance of showers, mainly after 10pm. Cloudy, with a steady temperature around 42. Light and variable wind becoming southwest around 6 mph in the evening.
Thursday
A slight chance of rain and snow showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 30 by 5pm. Wind chill values between 20 and 30. West wind 7 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 19. Wind chill values between 5 and 15. West wind around 14 mph, with gusts as high as 30 mph.
Friday
Sunny, with a high near 37. West wind 13 to 16 mph, with gusts as high as 31 mph.
Friday Night
Mostly cloudy, with a steady temperature around 32.
Saturday
A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
Partly sunny, with a high near 34.
Sunday Night
Partly cloudy, with a low around 21.
M.L.King Day
Mostly sunny, with a high near 33.
Monday Night
Mostly cloudy, with a low around 20.
Tuesday
Mostly sunny, with a high near 30.
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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:
6:04 am EST Jan 14, 2026
Forecast Valid:
7am EST Jan 14, 2026-6pm EST Jan 20, 2026
 
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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