Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

30°F

-1°C

Humidity 47%
Wind Speed N 17 G 29 mph
Barometer 30.09 in (1019.1 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 25 Dec 9:56 pm EST
Extended Forecast for

Blue Point NY

Winter Storm Warning December 26, 04:00pm until December 27, 01:00pm
Click here for hazard details and duration
Winter Storm Warning
  • Tonight

    Tonight: Partly cloudy, with a low around 20. Wind chill values between 10 and 15. North wind 10 to 14 mph, with gusts as high as 26 mph.

    Low: 20 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of snow after 4pm.  Increasing clouds, with a high near 33. Wind chill values between 10 and 20. North wind 6 to 10 mph.

    High: 33 °F

    Mostly Sunny
    then Chance
    Snow

  • Friday Night

    Friday Night: Snow, mainly after 7pm. The snow could be heavy at times.  Temperature falling to near 25 by 8pm, then rising to around 31 during the remainder of the night. Wind chill values between 20 and 25. East wind 5 to 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    Low: 25 °F

    Heavy Snow

  • Saturday

    Saturday: Snow likely before 4pm, then a slight chance of rain.  Mostly cloudy, with a high near 34. Wind chill values between 20 and 25. North wind 10 to 14 mph.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 34 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 22. North wind around 6 mph.

    Low: 22 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain.  Low around 30. Chance of precipitation is 80%.

    Low: 30 °F

    Rain

  • Monday

    Monday: Rain.  High near 49. Chance of precipitation is 80%.

    High: 49 °F

    Rain

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 25. Breezy.

    Low: 25 °F

    Mostly Cloudy
    then Partly
    Cloudy and
    Breezy

Detailed Forecast

Tonight
Partly cloudy, with a low around 20. Wind chill values between 10 and 15. North wind 10 to 14 mph, with gusts as high as 26 mph.
Friday
A 40 percent chance of snow after 4pm. Increasing clouds, with a high near 33. Wind chill values between 10 and 20. North wind 6 to 10 mph.
Friday Night
Snow, mainly after 7pm. The snow could be heavy at times. Temperature falling to near 25 by 8pm, then rising to around 31 during the remainder of the night. Wind chill values between 20 and 25. East wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Saturday
Snow likely before 4pm, then a slight chance of rain. Mostly cloudy, with a high near 34. Wind chill values between 20 and 25. North wind 10 to 14 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
Mostly cloudy, with a low around 22. North wind around 6 mph.
Sunday
Mostly cloudy, with a high near 40.
Sunday Night
Rain. Low around 30. Chance of precipitation is 80%.
Monday
Rain. High near 49. Chance of precipitation is 80%.
Monday Night
Mostly cloudy, with a low around 25. Breezy.
Tuesday
Mostly sunny, with a high near 33. Breezy.
Tuesday Night
Mostly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 24.
New Year's Day
Partly sunny, with a high near 35.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Blue Point NY
 40.75°N 73.04°W (Elev. 30 ft)
1:14 pm EST Dec 25, 2025
10pm EST Dec 25, 2025-6pm EST Jan 1, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database