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.

Light Rain

42°F

6°C

Humidity 85%
Wind Speed E 12 G 22 mph
Barometer 30.45 in (1031.2 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 2 Apr 10:56 am EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Today

    Today: A 20 percent chance of light rain before noon. Mostly cloudy, with a high near 45. Breezy, with an east wind 20 to 23 mph.

    High: 45 °F

    Slight Chance
    Light Rain
    and Breezy

  • Tonight

    Tonight: A chance of drizzle or light rain, mainly after 2am. Patchy fog. Otherwise, cloudy, with a low around 40. East wind 11 to 17 mph. Chance of precipitation is 30%.

    Low: 40 °F

    Chance Light
    Rain and
    Patchy Fog

  • Friday

    Friday: A chance of drizzle or light rain before 11am. Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 49. East wind 6 to 11 mph. Chance of precipitation is 30%.

    High: 49 °F

    Chance Light
    Rain and
    Areas Fog
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 48. Breezy, with a southwest wind 15 to 20 mph.

    Low: 48 °F

    Mostly Cloudy
    and Breezy

  • Saturday

    Saturday: A 20 percent chance of showers. Partly sunny, with a high near 54. West wind 5 to 13 mph becoming east in the morning.

    High: 54 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 43. Breezy.

    Low: 43 °F

    Mostly Cloudy
    and Breezy
    then Cloudy

  • Sunday

    Sunday: Showers. High near 52. Windy. Chance of precipitation is 90%.

    High: 52 °F

    Showers and
    Windy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of light rain before noon. Mostly cloudy, with a high near 45. Breezy, with an east wind 20 to 23 mph.
Tonight
A chance of drizzle or light rain, mainly after 2am. Patchy fog. Otherwise, cloudy, with a low around 40. East wind 11 to 17 mph. Chance of precipitation is 30%.
Friday
A chance of drizzle or light rain before 11am. Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 49. East wind 6 to 11 mph. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 48. Breezy, with a southwest wind 15 to 20 mph.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 54. West wind 5 to 13 mph becoming east in the morning.
Saturday Night
Mostly cloudy, with a low around 43. Breezy.
Sunday
Showers. High near 52. Windy. Chance of precipitation is 90%.
Sunday Night
Mostly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Mostly sunny, with a high near 46.
Tuesday Night
Partly cloudy, with a low around 35. Breezy.
Wednesday
Sunny, with a high near 43.
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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:
11:10 am EDT Apr 2, 2026
Forecast Valid:
11am EDT Apr 2, 2026-6pm EDT Apr 8, 2026
 
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