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

53°F

12°C

Humidity 57%
Wind Speed S 10 mph
Barometer 30.33 in (1027.1 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 10 Apr 11:56 am EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a temperature falling to around 50 by 3pm. South wind 9 to 11 mph.

    High: 54 °F⇓

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 44. South wind 15 to 17 mph.

    Low: 44 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Partly sunny through mid morning, then becoming sunny, with a high near 54. Northwest wind 14 to 17 mph.

    High: 54 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42. North wind around 8 mph.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 49. Northeast wind 6 to 10 mph becoming south in the afternoon.

    High: 49 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46.

    Low: 46 °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 52. Breezy.

    Low: 52 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a temperature falling to around 50 by 3pm. South wind 9 to 11 mph.
Tonight
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 44. South wind 15 to 17 mph.
Saturday
Partly sunny through mid morning, then becoming sunny, with a high near 54. Northwest wind 14 to 17 mph.
Saturday Night
Mostly clear, with a low around 42. North wind around 8 mph.
Sunday
Mostly sunny, with a high near 49. Northeast wind 6 to 10 mph becoming south in the afternoon.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Mostly cloudy, with a high near 56. Breezy.
Monday Night
Mostly cloudy, with a low around 52. Breezy.
Tuesday
Mostly sunny, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 51. Breezy.
Thursday
Partly sunny, with a high near 62.
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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:
11:43 am EDT Apr 10, 2026
Forecast Valid:
12pm EDT Apr 10, 2026-6pm EDT Apr 16, 2026
 
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Additional Resources

Radar & Satellite Image

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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