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.

A Few Clouds

67°F

19°C

Humidity 22%
Wind Speed SW 14 G 22 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 9 Mar 1:56 pm EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 54. Southwest wind around 8 mph.

    High: 54 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog. Otherwise, mostly cloudy, with a low around 39. Southwest wind 7 to 9 mph.

    Low: 39 °F

    Patchy Fog

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 60. Southwest wind 6 to 10 mph.

    High: 60 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 40. South wind 7 to 9 mph.

    Low: 40 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 20 percent chance of showers. Mostly cloudy, with a high near 55. South wind 9 to 16 mph.

    High: 55 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 45. Breezy.

    Low: 45 °F

    Chance
    Showers and
    Breezy

  • Thursday

    Thursday: Rain likely, mainly before 2pm. Cloudy, with a high near 51. Breezy. Chance of precipitation is 60%.

    High: 51 °F

    Rain Likely
    and Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of rain before 8pm. Mostly cloudy, with a low around 32. Breezy.

    Low: 32 °F

    Breezy.
    Chance Rain
    then Partly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 54. Southwest wind around 8 mph.
Tonight
Patchy fog. Otherwise, mostly cloudy, with a low around 39. Southwest wind 7 to 9 mph.
Tuesday
Mostly cloudy, with a high near 60. Southwest wind 6 to 10 mph.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 40. South wind 7 to 9 mph.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 55. South wind 9 to 16 mph.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 45. Breezy.
Thursday
Rain likely, mainly before 2pm. Cloudy, with a high near 51. Breezy. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of rain before 8pm. Mostly cloudy, with a low around 32. Breezy.
Friday
Mostly sunny, with a high near 43.
Friday Night
A 30 percent chance of rain before 2am. Mostly cloudy, with a low around 38. Breezy.
Saturday
Partly sunny, with a high near 45. Breezy.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
Cloudy, with a high near 48. Breezy.
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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:
2:19 pm EDT Mar 9, 2026
Forecast Valid:
2pm EDT Mar 9, 2026-6pm EDT Mar 15, 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