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.

Fair

60°F

16°C

Humidity 86%
Wind Speed NE 6 mph
Barometer 30.19 in (1022.3 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 2 Sep 1:56 am EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Overnight

    Overnight: Mostly clear, with a low around 64. Northeast wind around 9 mph.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 70. East wind 11 to 13 mph.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64. East wind around 6 mph becoming calm in the evening.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 71. Northeast wind 5 to 9 mph becoming southeast in the afternoon.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. South wind around 7 mph.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 2am. Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 74.

    High: 74 °F

    Chance
    Showers then
    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after 2am. Partly cloudy, with a low around 71. Breezy.

    Low: 71 °F

    Partly Cloudy
    and Breezy
    then Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 64. Northeast wind around 9 mph.
Tuesday
Sunny, with a high near 70. East wind 11 to 13 mph.
Tuesday Night
Partly cloudy, with a low around 64. East wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 71. Northeast wind 5 to 9 mph becoming southeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 66. South wind around 7 mph.
Thursday
Sunny, with a high near 72.
Thursday Night
A 30 percent chance of showers after 2am. Partly cloudy, with a low around 69.
Friday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 74.
Friday Night
A 30 percent chance of showers after 2am. Partly cloudy, with a low around 71. Breezy.
Saturday
A chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 75. Chance of precipitation is 30%.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 62.
Monday
Sunny, with a high near 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:
1:59 am EDT Sep 2, 2025
Forecast Valid:
2am EDT Sep 2, 2025-6pm EDT Sep 8, 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