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

44°F

7°C

Humidity 51%
Wind Speed N 12 mph
Barometer 30.40 in (1029.4 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 12 Apr 1:56 am EDT
Extended Forecast for

Patchogue NY

  • Overnight

    Overnight: Clear, with a low around 41. North wind around 8 mph.

    Low: 41 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 54. Northeast wind 6 to 8 mph becoming south in the afternoon.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 43. South wind around 7 mph.

    Low: 43 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 68. Southwest wind 11 to 15 mph, with gusts as high as 25 mph.

    High: 68 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 51. Southwest wind 6 to 9 mph, with gusts as high as 21 mph.

    Low: 51 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers between 8pm and midnight. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 41. North wind around 8 mph.
Sunday
Sunny, with a high near 54. Northeast wind 6 to 8 mph becoming south in the afternoon.
Sunday Night
Mostly cloudy, with a low around 43. South wind around 7 mph.
Monday
A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 68. Southwest wind 11 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 51. Southwest wind 6 to 9 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
A chance of showers between 8pm and midnight. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 73.
Thursday Night
Mostly cloudy, with a low around 55.
Friday
Mostly sunny, with a high near 68.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 64.
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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:
2:46 am EDT Apr 12, 2026
Forecast Valid:
2am EDT Apr 12, 2026-6pm EDT Apr 18, 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