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.

Overcast

22°C

72°F

Humidity 84%
Wind Speed E 11 km/h
Barometer 1019.2 mb (30.10 in)
Dewpoint 19°C (67°F)
Visibility 16 km
Last update 12 Jul 10:56 pm EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 21. East wind around 10 km/h.

    Low: 21 °C

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 24. East wind 11 to 16 km/h.

    High: 24 °C

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22. Southeast wind 8 to 11 km/h.

    Low: 22 °C

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 25. South wind 8 to 14 km/h. Chance of precipitation is 20%.

    High: 25 °C

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers. Mostly cloudy, with a low around 22. Southwest wind around 11 km/h. Chance of precipitation is 30%.

    Low: 22 °C

    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 27.

    High: 27 °C

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23.

    Low: 23 °C

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 27.

    High: 27 °C

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 23.

    Low: 23 °C

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 21. East wind around 10 km/h.
Sunday
Partly sunny, with a high near 24. East wind 11 to 16 km/h.
Sunday Night
Mostly cloudy, with a low around 22. Southeast wind 8 to 11 km/h.
Monday
A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 25. South wind 8 to 14 km/h. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers. Mostly cloudy, with a low around 22. Southwest wind around 11 km/h. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 27.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Sunny, with a high near 27.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 27.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 23.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 27.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 22.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 26.
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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 m)
Last Update:
6:14 pm EDT Jul 12, 2025
Forecast Valid:
11pm EDT Jul 12, 2025-6pm EDT Jul 19, 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