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

35°F

2°C

Humidity 85%
Wind Speed E 8 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 20 Feb 2:56 am EST
Extended Forecast for

Patchogue NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 32. East wind around 6 mph.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: Rain, mainly after 7am. High near 40. East wind 7 to 14 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 40 °F

    Rain

  • Friday Night

    Friday Night: Rain likely, mainly before 7pm. Mostly cloudy, with a low around 30. East wind around 6 mph becoming light and variable. Chance of precipitation is 60%.

    Low: 30 °F

    Rain Likely
    then Mostly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 44. West wind 3 to 7 mph.

    High: 44 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 29. Calm wind becoming east around 6 mph after midnight.

    Low: 29 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: A 50 percent chance of snow. Cloudy, with a high near 37.

    High: 37 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Snow likely. Cloudy, with a low around 28. Chance of precipitation is 70%.

    Low: 28 °F

    Snow Likely

  • Monday

    Monday: A 40 percent chance of snow before 1pm. Cloudy, with a high near 35. Breezy.

    High: 35 °F

    Chance Snow
    and Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 32. East wind around 6 mph.
Friday
Rain, mainly after 7am. High near 40. East wind 7 to 14 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain likely, mainly before 7pm. Mostly cloudy, with a low around 30. East wind around 6 mph becoming light and variable. Chance of precipitation is 60%.
Saturday
Partly sunny, with a high near 44. West wind 3 to 7 mph.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 29. Calm wind becoming east around 6 mph after midnight.
Sunday
A 50 percent chance of snow. Cloudy, with a high near 37.
Sunday Night
Snow likely. Cloudy, with a low around 28. Chance of precipitation is 70%.
Monday
A 40 percent chance of snow before 1pm. Cloudy, with a high near 35. Breezy.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
Mostly cloudy, with a low around 22.
Wednesday
Mostly cloudy, with a high near 41.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 32. Chance of precipitation is 60%.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 43.
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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:
1:01 am EST Feb 20, 2026
Forecast Valid:
3am EST Feb 20, 2026-6pm EST Feb 26, 2026
 
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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