Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Rain Snow Fog/Mist

37°F

3°C

Humidity 89%
Wind Speed NW 15 G 22 mph
Barometer 29.79 in (1008.6 mb)
Dewpoint 34°F (1°C)
Visibility 6.00 mi
Wind Chill28°F (-2°C)
Last update 12 Mar 3:56 pm EDT
Extended Forecast for

2 Miles NNW Stony Brook NY

  • This Afternoon

    This Afternoon: Rain and snow, becoming all snow after 5pm.  Steady temperature around 38. Northwest wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.

    High: 38 °F

    Rain/Snow

  • Tonight

    Tonight: Snow before 8pm.  Low around 31. Wind chill values between 25 and 30. Northwest wind 13 to 15 mph.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Snow then
    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 46. West wind 6 to 16 mph becoming south in the afternoon.

    High: 46 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 38. South wind 16 to 18 mph, with gusts as high as 31 mph.

    Low: 38 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 49. Breezy, with a west wind 20 to 22 mph.

    High: 49 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 33.

    Low: 33 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 48.

    High: 48 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am.  Low around 40. Chance of precipitation is 80%.

    Low: 40 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain and possibly a thunderstorm.  High near 57. Breezy.  Chance of precipitation is 100%.

    High: 57 °F

    Rain and
    Breezy

Detailed Forecast

This Afternoon
Rain and snow, becoming all snow after 5pm. Steady temperature around 38. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow before 8pm. Low around 31. Wind chill values between 25 and 30. Northwest wind 13 to 15 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday
Increasing clouds, with a high near 46. West wind 6 to 16 mph becoming south in the afternoon.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 38. South wind 16 to 18 mph, with gusts as high as 31 mph.
Saturday
Sunny, with a high near 49. Breezy, with a west wind 20 to 22 mph.
Saturday Night
Increasing clouds, with a low around 33.
Sunday
Mostly cloudy, with a high near 48.
Sunday Night
Rain, mainly after 2am. Low around 40. Chance of precipitation is 80%.
Monday
Rain and possibly a thunderstorm. High near 57. Breezy. Chance of precipitation is 100%.
Monday Night
Rain, mainly before 2am. Low around 36. Breezy. Chance of precipitation is 80%.
Tuesday
A 30 percent chance of rain. Mostly sunny, with a high near 44.
Tuesday Night
Partly cloudy, with a low around 27.
Wednesday
Sunny, with a high near 38.
Wednesday Night
Partly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Stony Brook NY
 40.92°N 73.15°W (Elev. 36 ft)
3:03 pm EDT Mar 12, 2026
4pm EDT Mar 12, 2026-6pm EDT Mar 19, 2026
 
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Additional Resources

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