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

47°F

8°C

Humidity 54%
Wind Speed N 8 mph
Barometer 30.21 in (1022.9 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 20 Nov 11:56 am EST
Extended Forecast for

Patchogue NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 47. North wind 3 to 5 mph.

    High: 47 °F

    Mostly Sunny

  • Tonight

    Tonight: Areas of frost after 9pm. Otherwise, increasing clouds, with a low around 35. Calm wind.

    Low: 35 °F

    Areas Frost

  • Friday

    Friday: Mostly cloudy, with a high near 54. Light west wind becoming southwest 5 to 10 mph in the morning.

    High: 54 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Rain likely, mainly after 1am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 42. Southwest wind around 6 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Rain Likely
    and Patchy
    Fog

  • Saturday

    Saturday: A 40 percent chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 50. North wind 6 to 11 mph.

    High: 50 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 47. North wind 3 to 5 mph.
Tonight
Areas of frost after 9pm. Otherwise, increasing clouds, with a low around 35. Calm wind.
Friday
Mostly cloudy, with a high near 54. Light west wind becoming southwest 5 to 10 mph in the morning.
Friday Night
Rain likely, mainly after 1am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 42. Southwest wind around 6 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 40 percent chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 50. North wind 6 to 11 mph.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Sunny, with a high near 53.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
A 30 percent chance of rain. Cloudy, with a high near 56.
Tuesday Night
Rain. Low around 47. Chance of precipitation is 80%.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 59.
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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:
12:38 pm EST Nov 20, 2025
Forecast Valid:
12pm EST Nov 20, 2025-6pm EST Nov 26, 2025
 
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Additional Resources

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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