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

62°F

17°C

Humidity 80%
Wind Speed E 5 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 20 Sep 5:56 am EDT
Extended Forecast for

North Patchogue NY

  • Today

    Today: Rain, mainly after 8am. High near 68. Southeast wind 7 to 11 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 68 °F

    Rain

  • Tonight

    Tonight: Periods of rain and possibly a thunderstorm before 2am, then rain likely. Low around 62. South wind 6 to 10 mph becoming north after midnight. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 62 °F

    Rain

  • Monday

    Monday: A 30 percent chance of rain before 8am. Mostly cloudy, with a high near 67. Northeast wind 11 to 15 mph.

    High: 67 °F

    Chance Rain
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: A 30 percent chance of showers after 2am. Cloudy, with a low around 57. Northeast wind 10 to 13 mph.

    Low: 57 °F

    Cloudy then
    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers. Mostly cloudy, with a high near 65. Northeast wind around 16 mph, with gusts as high as 26 mph.

    High: 65 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • 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 52.

    Low: 52 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers after 8am. Mostly cloudy, with a high near 65. Breezy.

    High: 65 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Today
Rain, mainly after 8am. High near 68. Southeast wind 7 to 11 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Periods of rain and possibly a thunderstorm before 2am, then rain likely. Low around 62. South wind 6 to 10 mph becoming north after midnight. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A 30 percent chance of rain before 8am. Mostly cloudy, with a high near 67. Northeast wind 11 to 15 mph.
Monday Night
A 30 percent chance of showers after 2am. Cloudy, with a low around 57. Northeast wind 10 to 13 mph.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 65. Northeast wind around 16 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 52.
Wednesday
Mostly cloudy, with a high near 65. Breezy.
Wednesday Night
Mostly cloudy, with a low around 52.
Thursday
A 30 percent chance of showers after 8am. Mostly cloudy, with a high near 65. Breezy.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 51.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 65. Breezy.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 51.
Saturday
A 30 percent chance of showers. Mostly cloudy, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
North Patchogue NY
 40.8°N 73.03°W (Elev. 49 ft)
Last Update:
3:41 am EDT Sep 20, 2026
Forecast Valid:
6am EDT Sep 20, 2026-6pm EDT Sep 26, 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