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.

Mostly Cloudy

46°F

8°C

Humidity 37%
Wind Speed W 15 G 26 mph
Barometer 29.96 in (1014.6 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 22 Jan 1:56 pm EST
Extended Forecast for

5 Miles SSE Blue Point NY

Winter Storm Watch January 25, 03:00am until January 26, 06:00pm
Cold Weather Advisory January 23, 10:00pm until January 24, 10:00am
Click here for hazard details and duration
Winter Storm Watch
Cold Weather Advisory

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 42. Breezy, with a west wind around 22 mph.

    High: 42 °F

    Mostly Cloudy
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 30. Wind chill values between 20 and 30. Breezy, with a west wind 18 to 21 mph.

    Low: 30 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 36. Wind chill values between 20 and 25. Windy, with a west wind 15 to 20 mph increasing to 23 to 28 mph in the afternoon.

    High: 36 °F

    Mostly Sunny
    and Windy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 12. Wind chill values between -5 and 5. Windy, with a northwest wind 22 to 31 mph.

    Low: 12 °F

    Partly Cloudy
    and Windy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 18. Northwest wind 14 to 18 mph.

    High: 18 °F

    Cold

  • Saturday Night

    Saturday Night: A 40 percent chance of snow after 1am. Cloudy, with a low around 16.

    Low: 16 °F

    Cloudy then
    Chance Snow

  • Sunday

    Sunday: Snow. The snow could be heavy at times. High near 31. Windy. Chance of precipitation is 100%.

    High: 31 °F

    Heavy Snow
    and Windy

  • Sunday Night

    Sunday Night: Snow. Low around 26. Windy. Chance of precipitation is 100%.

    Low: 26 °F

    Snow and
    Windy

  • Monday

    Monday: Snow likely, mainly before noon. Mostly cloudy, with a high near 30. Windy. Chance of precipitation is 60%.

    High: 30 °F

    Snow Likely
    and Windy

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 42. Breezy, with a west wind around 22 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 30. Wind chill values between 20 and 30. Breezy, with a west wind 18 to 21 mph.
Friday
Mostly sunny, with a high near 36. Wind chill values between 20 and 25. Windy, with a west wind 15 to 20 mph increasing to 23 to 28 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 12. Wind chill values between -5 and 5. Windy, with a northwest wind 22 to 31 mph.
Saturday
Mostly sunny and cold, with a high near 18. Northwest wind 14 to 18 mph.
Saturday Night
A 40 percent chance of snow after 1am. Cloudy, with a low around 16.
Sunday
Snow. The snow could be heavy at times. High near 31. Windy. Chance of precipitation is 100%.
Sunday Night
Snow. Low around 26. Windy. Chance of precipitation is 100%.
Monday
Snow likely, mainly before noon. Mostly cloudy, with a high near 30. Windy. Chance of precipitation is 60%.
Monday Night
A 30 percent chance of snow showers before midnight. Partly cloudy, with a low around 16. Windy.
Tuesday
Mostly sunny, with a high near 24. Windy.
Tuesday Night
Partly cloudy, with a low around 17. Windy.
Wednesday
Mostly sunny, with a high near 26. 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:
1:42 pm EST Jan 22, 2026
Forecast Valid:
2pm EST Jan 22, 2026-6pm EST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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