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.

Partly Cloudy

33°F

1°C

Humidity 96%
Wind Speed SW 5 mph
Barometer 29.86 in (1011.1 mb)
Dewpoint 32°F (0°C)
Visibility 7.00 mi
Wind Chill28°F (-2°C)
Last update 21 Feb 6:56 am EST
Extended Forecast for

Bay Shore NY

Coastal Flood Watch February 22, 10:00pm until February 23, 04:00am
Blizzard Warning February 22, 06:00am until February 23, 06:00pm
Click here for hazard details and duration
Coastal Flood Watch
Blizzard Warning

  • Today

    Today: Mostly sunny, with a high near 45. Northwest wind 5 to 7 mph.

    High: 45 °F

    Mostly Sunny

  • Tonight

    Tonight: A 40 percent chance of snow after 4am. Mostly cloudy, with a low around 32. Calm wind becoming east 5 to 7 mph after midnight.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow, mainly after 7am. High near 35. Wind chill values between 20 and 25. East wind 10 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 35 °F

    Snow

  • Sunday Night

    Sunday Night: Snow. The snow could be heavy at times. Areas of blowing snow. Low around 31. Wind chill values between 15 and 20. Windy, with a northeast wind 24 to 32 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.

    Low: 31 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Monday

    Monday: Snow. The snow could be heavy at times. Areas of blowing snow. High near 33. Windy, with a north wind 24 to 33 mph, with gusts as high as 48 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

    High: 33 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Monday Night

    Monday Night: Cloudy, then gradually becoming partly cloudy, with a low around 23. Blustery.

    Low: 23 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain and snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 39. Chance of precipitation is 30%.

    High: 39 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
Mostly sunny, with a high near 45. Northwest wind 5 to 7 mph.
Tonight
A 40 percent chance of snow after 4am. Mostly cloudy, with a low around 32. Calm wind becoming east 5 to 7 mph after midnight.
Sunday
Snow, mainly after 7am. High near 35. Wind chill values between 20 and 25. East wind 10 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
Snow. The snow could be heavy at times. Areas of blowing snow. Low around 31. Wind chill values between 15 and 20. Windy, with a northeast wind 24 to 32 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.
Monday
Snow. The snow could be heavy at times. Areas of blowing snow. High near 33. Windy, with a north wind 24 to 33 mph, with gusts as high as 48 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.
Monday Night
Cloudy, then gradually becoming partly cloudy, with a low around 23. Blustery.
Tuesday
Mostly sunny, with a high near 32.
Tuesday Night
Mostly cloudy, with a low around 20.
Wednesday
A chance of rain and snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 39. Chance of precipitation is 30%.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 31.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 42.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 30.
Friday
A 30 percent chance of rain. Mostly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bay Shore NY
 40.71°N 73.25°W (Elev. 13 ft)
Last Update:
3:41 am EST Feb 21, 2026
Forecast Valid:
7am EST Feb 21, 2026-6pm EST Feb 27, 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