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

65°F

18°C

Humidity 34%
Wind Speed SW 13 mph
Barometer 30.01 in (1016.0 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 9 Mar 2:56 pm EDT
Extended Forecast for

Blue Point NY

  • Tonight

    Tonight: Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 39. Southwest wind 3 to 6 mph.

    Low: 39 °F

    Patchy Fog

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 65 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 39. South wind 3 to 5 mph.

    Low: 39 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 20 percent chance of showers. Mostly cloudy, with a high near 58. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 58 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 46. South wind 11 to 13 mph, with gusts as high as 25 mph.

    Low: 46 °F

    Chance
    Showers

  • Thursday

    Thursday: Rain likely, mainly before 2pm. Cloudy, with a temperature rising to near 50 by 10am, then falling to around 44 during the remainder of the day. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F⇓

    Rain Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of rain before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 30.

    Low: 30 °F

    Chance Rain
    then Partly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of rain before 2am. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Tonight
Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 39. Southwest wind 3 to 6 mph.
Tuesday
Mostly cloudy, with a high near 65. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 39. South wind 3 to 5 mph.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 58. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 46. South wind 11 to 13 mph, with gusts as high as 25 mph.
Thursday
Rain likely, mainly before 2pm. Cloudy, with a temperature rising to near 50 by 10am, then falling to around 44 during the remainder of the day. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 30 percent chance of rain before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 30.
Friday
Mostly sunny, with a high near 44.
Friday Night
A 30 percent chance of rain before 2am. Mostly cloudy, with a low around 35.
Saturday
Mostly sunny, with a high near 47.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
Mostly cloudy, with a high near 49.
Sunday Night
Rain likely. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Monday
Rain likely. Cloudy, with a high near 48. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Blue Point NY
 40.75°N 73.04°W (Elev. 30 ft)
Last Update:
2:19 pm EDT Mar 9, 2026
Forecast Valid:
3pm EDT Mar 9, 2026-6pm EDT Mar 16, 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