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.

Partly Cloudy

39°F

4°C

Humidity 73%
Wind Speed S 16 mph
Barometer 29.86 in (1011.1 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 13 Mar 9:56 pm EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Tonight

    Tonight: A slight chance of showers between 11pm and 2am. Partly cloudy, with a steady temperature around 42. Windy, with a southwest wind 26 to 29 mph. Chance of precipitation is 20%.

    Low: 42 °F

    Slight Chance
    Showers and
    Windy

  • Saturday

    Saturday: Sunny, with a high near 45. Windy, with a west wind 25 to 30 mph, with gusts as high as 43 mph.

    High: 45 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 34. Northwest wind 8 to 17 mph.

    Low: 34 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 45. Northeast wind 9 to 15 mph becoming southeast in the afternoon.

    High: 45 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain likely after 2am. Cloudy, with a low around 41. Breezy, with a southeast wind 14 to 24 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Mostly Cloudy
    then Rain
    Likely and
    Breezy

  • Monday

    Monday: Rain, with thunderstorms also possible after 2pm. High near 53. Windy. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 53 °F

    Rain and
    Windy

  • Monday Night

    Monday Night: Rain and possibly a thunderstorm. Low around 36. Very windy. Chance of precipitation is 90%.

    Low: 36 °F

    Rain and Very
    Windy

  • Tuesday

    Tuesday: A 30 percent chance of rain before 8am. Mostly sunny, with a high near 41. Windy.

    High: 41 °F

    Windy. Chance
    Rain then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 27. Windy.

    Low: 27 °F

    Partly Cloudy
    and Windy

Detailed Forecast

Tonight
A slight chance of showers between 11pm and 2am. Partly cloudy, with a steady temperature around 42. Windy, with a southwest wind 26 to 29 mph. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 45. Windy, with a west wind 25 to 30 mph, with gusts as high as 43 mph.
Saturday Night
Increasing clouds, with a low around 34. Northwest wind 8 to 17 mph.
Sunday
Mostly cloudy, with a high near 45. Northeast wind 9 to 15 mph becoming southeast in the afternoon.
Sunday Night
Rain likely after 2am. Cloudy, with a low around 41. Breezy, with a southeast wind 14 to 24 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain, with thunderstorms also possible after 2pm. High near 53. Windy. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain and possibly a thunderstorm. Low around 36. Very windy. Chance of precipitation is 90%.
Tuesday
A 30 percent chance of rain before 8am. Mostly sunny, with a high near 41. Windy.
Tuesday Night
Partly cloudy, with a low around 27. Windy.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 33.
Thursday
Partly sunny, with a high near 41.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Mostly sunny, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Blue Point NY
 40.68°N 72.99°W (Elev. 0 ft)
Last Update:
9:14 pm EDT Mar 13, 2026
Forecast Valid:
10pm EDT Mar 13, 2026-6pm EDT Mar 20, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation