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.

Overcast

53°F

12°C

Humidity 86%
Wind Speed SW 6 mph
Barometer 29.72 in (1006.4 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 30 Apr 2:56 pm EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 50. Southwest wind 6 to 10 mph becoming northwest after midnight.

    Low: 50 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 55. Northwest wind around 11 mph becoming southwest in the afternoon.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 2am. Increasing clouds, with a low around 49. Southwest wind 8 to 13 mph.

    Low: 49 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 52. Southwest wind 6 to 8 mph becoming south in the afternoon.

    High: 52 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers. Cloudy, with a low around 47. South wind 6 to 9 mph becoming north after midnight.

    Low: 47 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. Breezy.

    High: 55 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52. Breezy.

    Low: 52 °F

    Partly Cloudy
    and Breezy

Detailed Forecast

Tonight
Partly cloudy, with a steady temperature around 50. Southwest wind 6 to 10 mph becoming northwest after midnight.
Friday
Sunny, with a high near 55. Northwest wind around 11 mph becoming southwest in the afternoon.
Friday Night
A 20 percent chance of showers after 2am. Increasing clouds, with a low around 49. Southwest wind 8 to 13 mph.
Saturday
A 40 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 52. Southwest wind 6 to 8 mph becoming south in the afternoon.
Saturday Night
A 50 percent chance of showers. Cloudy, with a low around 47. South wind 6 to 9 mph becoming north after midnight.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 55. Breezy.
Monday Night
Partly cloudy, with a low around 52. Breezy.
Tuesday
Mostly sunny, with a high near 58. Breezy.
Tuesday Night
Mostly cloudy, with a low around 53. Breezy.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 57. Windy.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 52. Windy. Chance of precipitation is 60%.
Thursday
Showers likely. Mostly cloudy, with a high near 58. Breezy. Chance of precipitation is 70%.
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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:
2:27 pm EDT Apr 30, 2026
Forecast Valid:
3pm EDT Apr 30, 2026-6pm EDT May 7, 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