National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

31°F

-1°C

Humidity 59%
Wind Speed E 8 mph
Barometer 30.17 in (1021.6 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 5 Dec 1:56 pm EST
Extended Forecast for

5 Miles SSE Blue Point NY

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 38. East wind around 8 mph.

    High: 38 °F

    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of drizzle before 8pm, then a slight chance of snow between 8pm and 10pm, then a chance of drizzle after 10pm. Cloudy, with a temperature rising to around 39 by 4am. East wind around 6 mph. Chance of precipitation is 20%.

    Low: 34 °F⇑

    Slight Chance
    Drizzle/Snow
    then Chance
    Drizzle

  • Saturday

    Saturday: A chance of drizzle before 1pm. Cloudy, with a high near 43. East wind 6 to 13 mph becoming west in the afternoon.

    High: 43 °F

    Chance
    Drizzle

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 35. West wind 11 to 15 mph.

    Low: 35 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 41. North wind 7 to 9 mph becoming southwest in the afternoon.

    High: 41 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 34. Breezy.

    High: 34 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 25. Blustery.

    Low: 25 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 41. Breezy.

    High: 41 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 38. East wind around 8 mph.
Tonight
A slight chance of drizzle before 8pm, then a slight chance of snow between 8pm and 10pm, then a chance of drizzle after 10pm. Cloudy, with a temperature rising to around 39 by 4am. East wind around 6 mph. Chance of precipitation is 20%.
Saturday
A chance of drizzle before 1pm. Cloudy, with a high near 43. East wind 6 to 13 mph becoming west in the afternoon.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 35. West wind 11 to 15 mph.
Sunday
Partly sunny, with a high near 41. North wind 7 to 9 mph becoming southwest in the afternoon.
Sunday Night
Mostly cloudy, with a low around 30.
Monday
Mostly sunny, with a high near 34. Breezy.
Monday Night
Partly cloudy, with a low around 25. Blustery.
Tuesday
Mostly sunny, with a high near 41. Breezy.
Tuesday Night
Mostly cloudy, with a low around 37. Breezy.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 48. Breezy.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 40. Breezy.
Thursday
A 40 percent chance of rain. Partly sunny, with a high near 45. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Blue Point NY
 40.68°N 72.99°W (Elev. 0 ft)
Last Update:
1:11 pm EST Dec 5, 2025
Forecast Valid:
2pm EST Dec 5, 2025-6pm EST Dec 11, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation