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.

Mostly Cloudy

45°F

7°C

Humidity 86%
Wind Speed S 10 mph
Barometer 30.17 in (1021.5 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 10 Apr 7:56 pm EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Tonight

    Tonight: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 43. Southwest wind 14 to 17 mph.

    Low: 43 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 54. Breezy, with a northwest wind 15 to 20 mph.

    High: 54 °F

    Sunny and
    Breezy then
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42. North wind around 10 mph.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 48. Northeast wind 5 to 9 mph becoming south in the afternoon.

    High: 48 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 44. South wind 11 to 17 mph.

    Low: 44 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 56. Breezy.

    High: 56 °F

    Mostly Cloudy
    and Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 51. Breezy.

    Low: 51 °F

    Mostly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 43. Southwest wind 14 to 17 mph.
Saturday
Sunny, with a high near 54. Breezy, with a northwest wind 15 to 20 mph.
Saturday Night
Mostly clear, with a low around 42. North wind around 10 mph.
Sunday
Mostly sunny, with a high near 48. Northeast wind 5 to 9 mph becoming south in the afternoon.
Sunday Night
Mostly cloudy, with a low around 44. South wind 11 to 17 mph.
Monday
Mostly cloudy, with a high near 56. Breezy.
Monday Night
Mostly cloudy, with a low around 51. Breezy.
Tuesday
Partly sunny, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 50.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
Mostly cloudy, with a low around 52.
Thursday
Partly sunny, with a high near 61.
Thursday Night
Mostly cloudy, with a low around 51.
Friday
Partly sunny, with a high near 57.
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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:
7:41 pm EDT Apr 10, 2026
Forecast Valid:
8pm EDT Apr 10, 2026-6pm EDT Apr 17, 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