Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

58°F

14°C

Humidity 48%
Wind Speed Calm
Barometer 29.94 in (1013.9 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 11 Nov 10:56 am EST
Extended Forecast for

Stony Brook NY

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 60. West wind 3 to 7 mph.

    High: 60 °F

    Mostly Sunny

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 47. Calm wind becoming east 5 to 7 mph after midnight.

    Low: 47 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: A chance of rain and thunderstorms before 1pm, then rain and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm.  High near 60. East wind 8 to 13 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: Rain.  Low around 43. North wind 11 to 14 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Rain

  • Friday

    Friday: Rain.  High near 50. North wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 50 °F

    Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain.  Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly 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 60. West wind 3 to 7 mph.
Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 47. Calm wind becoming east 5 to 7 mph after midnight.
Thursday
A chance of rain and thunderstorms before 1pm, then rain and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm. High near 60. East wind 8 to 13 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Rain. Low around 43. North wind 11 to 14 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 50. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 37.
Saturday
Partly sunny, with a high near 49.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Stony Brook NY
 40.92°N 73.12°W (Elev. 112 ft)
8:57 am EST Nov 11, 2026
11am EST Nov 11, 2026-6pm EST Nov 17, 2026
 
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Additional Resources

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Hourly Weather Forecast

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