Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

36°F

2°C

Humidity 89%
Wind Speed NE 6 mph
Barometer 30.42 in (1030.1 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 6 Mar 9:56 pm EST
Extended Forecast for

2 Miles NNW Stony Brook NY

  • Tonight

    Tonight: A chance of drizzle after 4am.  Cloudy, with a low around 34. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 34 °F

    Cloudy then
    Chance
    Drizzle

  • Saturday

    Saturday: A chance of drizzle before 7am.  Cloudy, with a high near 49. Calm wind becoming south 5 to 7 mph in the morning.

    High: 49 °F

    Chance
    Drizzle then
    Cloudy

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely after 1am.  Areas of dense fog after 1am.  Otherwise, cloudy, with a low around 43. Southwest wind 8 to 11 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Chance
    Showers then
    Showers
    Likely and
    Areas Dense
    Fog

  • Sunday

    Sunday: A 30 percent chance of showers before 1pm.  Areas of fog before 1pm.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 58. West wind 8 to 10 mph.

    High: 58 °F

    Chance
    Showers and
    Areas Fog

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. West wind around 6 mph.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after 1am.  Mostly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
A chance of drizzle after 4am. Cloudy, with a low around 34. Northeast wind around 5 mph becoming calm in the evening.
Saturday
A chance of drizzle before 7am. Cloudy, with a high near 49. Calm wind becoming south 5 to 7 mph in the morning.
Saturday Night
A chance of showers and thunderstorms, then showers likely after 1am. Areas of dense fog after 1am. Otherwise, cloudy, with a low around 43. Southwest wind 8 to 11 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A 30 percent chance of showers before 1pm. Areas of fog before 1pm. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 58. West wind 8 to 10 mph.
Sunday Night
Mostly clear, with a low around 39. West wind around 6 mph.
Monday
Sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 59.
Tuesday Night
A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 43.
Wednesday
A 50 percent chance of rain. Cloudy, with a high near 55.
Wednesday Night
Rain likely. Cloudy, with a low around 39. Chance of precipitation is 60%.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 47.
Thursday Night
Mostly cloudy, with a low around 31.
Friday
Mostly cloudy, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Stony Brook NY
 40.92°N 73.15°W (Elev. 36 ft)
12:51 pm EST Mar 6, 2026
10pm EST Mar 6, 2026-6pm EDT Mar 13, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database