Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

51°F

11°C

Humidity 59%
Wind Speed W 7 mph
Barometer 29.91 in (1012.9 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 11 Nov 3:56 am EST
Extended Forecast for

Islandia NY

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 61. West wind 3 to 7 mph.

    High: 61 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 47. Calm wind becoming east around 6 mph after midnight.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain and thunderstorms before 1pm, then rain likely and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm.  Mostly cloudy, with a high near 60. East wind 8 to 13 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain.  Low around 42. North wind 8 to 13 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 42 °F

    Rain

  • Friday

    Friday: Rain.  High near 50. North wind around 15 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 50 °F

    Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain.  Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

Veterans Day
Mostly sunny, with a high near 61. West wind 3 to 7 mph.
Tonight
Mostly cloudy, with a low around 47. Calm wind becoming east around 6 mph after midnight.
Thursday
A chance of rain and thunderstorms before 1pm, then rain likely and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm. Mostly cloudy, with a high near 60. East wind 8 to 13 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Rain. Low around 42. North wind 8 to 13 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 50. North wind around 15 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 35.
Saturday
Partly sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Sunny, with a high near 51.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Islandia NY
 40.81°N 73.17°W (Elev. 161 ft)
1:20 am EST Nov 11, 2026
4am EST Nov 11, 2026-6pm EST Nov 17, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database