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.

Overcast

45°F

7°C

Humidity 48%
Wind Speed NW 14 mph
Barometer 30.06 in (1017.8 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 27 Mar 4:56 pm EDT
Extended Forecast for

Patchogue NY

  • Tonight

    Tonight: A 20 percent chance of snow showers after 2am. Cloudy during the early evening, then becoming partly cloudy, with a low around 30. Calm wind becoming north 5 to 7 mph after midnight.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 41. Wind chill values between 20 and 30. North wind 10 to 14 mph.

    High: 41 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 27 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 45. Light south wind increasing to 9 to 14 mph in the morning.

    High: 45 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 39. Southwest wind 9 to 11 mph, with gusts as high as 24 mph.

    Low: 39 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain before 2pm. Partly sunny, with a high near 58.

    High: 58 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A chance of rain between 8pm and 2am. Mostly cloudy, with a low around 48. Chance of precipitation is 30%.

    Low: 48 °F

    Chance Rain

Detailed Forecast

Tonight
A 20 percent chance of snow showers after 2am. Cloudy during the early evening, then becoming partly cloudy, with a low around 30. Calm wind becoming north 5 to 7 mph after midnight.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 41. Wind chill values between 20 and 30. North wind 10 to 14 mph.
Saturday Night
Partly cloudy, with a low around 27. Northwest wind 5 to 7 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 45. Light south wind increasing to 9 to 14 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 39. Southwest wind 9 to 11 mph, with gusts as high as 24 mph.
Monday
Partly sunny, with a high near 53.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
A 30 percent chance of rain before 2pm. Partly sunny, with a high near 58.
Tuesday Night
A chance of rain between 8pm and 2am. Mostly cloudy, with a low around 48. Chance of precipitation is 30%.
Wednesday
A 40 percent chance of rain after 2pm. Partly sunny, with a high near 61.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 40.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 50.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 36.
Friday
A 50 percent chance of rain. Cloudy, with a high near 45.
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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:
3:17 pm EDT Mar 27, 2026
Forecast Valid:
5pm EDT Mar 27, 2026-6pm EDT Apr 3, 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