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

69°F

21°C

Humidity 93%
Wind Speed SE 5 mph
Barometer 29.91 in (1012.7 mb)
Dewpoint 67°F (19°C)
Visibility 9.00 mi
Last update 20 Sep 8:56 pm EDT
Extended Forecast for

Patchogue NY

  • Tonight

    Tonight: Rain likely, mainly before 2am. Cloudy, with a low around 62. South wind 5 to 8 mph becoming north after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 62 °F

    Rain Likely

  • Monday

    Monday: Mostly cloudy, with a high near 69. Northeast wind 11 to 15 mph.

    High: 69 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 57. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: A 50 percent chance of rain. Cloudy, with a high near 65. Northeast wind 14 to 16 mph, with gusts as high as 26 mph.

    High: 65 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before 2am. Mostly cloudy, with a low around 55. Northeast wind 15 to 17 mph, with gusts as high as 28 mph.

    Low: 55 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 65. Breezy.

    High: 65 °F

    Mostly Cloudy
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 54. Breezy.

    Low: 54 °F

    Mostly Cloudy
    and Breezy

  • Thursday

    Thursday: Mostly cloudy, with a high near 65. Breezy.

    High: 65 °F

    Mostly Cloudy
    and Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 53. Breezy.

    Low: 53 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Rain likely, mainly before 2am. Cloudy, with a low around 62. South wind 5 to 8 mph becoming north after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Mostly cloudy, with a high near 69. Northeast wind 11 to 15 mph.
Monday Night
A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 57. Northeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday
A 50 percent chance of rain. Cloudy, with a high near 65. Northeast wind 14 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
A 20 percent chance of rain before 2am. Mostly cloudy, with a low around 55. Northeast wind 15 to 17 mph, with gusts as high as 28 mph.
Wednesday
Mostly cloudy, with a high near 65. Breezy.
Wednesday Night
Mostly cloudy, with a low around 54. Breezy.
Thursday
Mostly cloudy, with a high near 65. Breezy.
Thursday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 53. Breezy.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 65. Breezy.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 54. Breezy.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 66. Breezy.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 55.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 68. Breezy.
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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:
2:08 pm EDT Sep 20, 2026
Forecast Valid:
9pm EDT Sep 20, 2026-6pm EDT Sep 27, 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