Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
10°F
-12°C
| Humidity | 43% |
| Wind Speed | N 14 G 28 mph |
| Barometer | 30.55 in (1034.7 mb) |
| Dewpoint | -8°F (-22°C) |
| Visibility | 10.00 mi |
| Wind Chill | -6°F (-21°C) |
| Last update | 24 Jan 6:56 am EST |
Extended Forecast for
Islip NY
Cold Weather Advisory January 24, 07:40am until January 24, 12:00pm
Winter Storm Warning January 25, 03:00am until January 26, 06:00pm
NOW until 12:00pm Sat
Cold Weather Advisory
Today
High: 19 °F
Cold
Tonight
Low: 13 °F
Mostly Cloudy
then Chance
SnowSunday
High: 31 °F
Heavy Snow
Sunday Night
Low: 29 °F
Wintry Mix
Monday
High: 31 °F
Wintry Mix
then Snow
LikelyMonday Night
Low: 11 °F
Partly Cloudy
Tuesday
High: 21 °F
Mostly Sunny
Tuesday Night
Low: 10 °F
Partly Cloudy
Detailed Forecast
Today
Mostly sunny and cold, with a high near 19. Wind chill values between -5 and 5. North wind 8 to 10 mph, with gusts as high as 25 mph.
Tonight
A 40 percent chance of snow after 4am. Mostly cloudy, with a low around 13. Wind chill values between 5 and 10. North wind around 6 mph.
Sunday
Snow, mainly after 7am. The snow could be heavy at times. High near 31. Wind chill values between 5 and 15. Northeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.
Sunday Night
Snow and sleet before 1am, then freezing rain and sleet between 1am and 4am, then snow, possibly mixed with freezing rain and sleet after 4am. Steady temperature around 29. Wind chill values between 15 and 20. Northeast wind 10 to 16 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. New snow and sleet accumulation of 1 to 3 inches possible.
Monday
Snow, possibly mixed with freezing rain and sleet, becoming all snow after 7am. High near 31. North wind 9 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%. Little or no ice accumulation expected. New snow and sleet accumulation of less than a half inch possible.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Mostly sunny, with a high near 21.
Tuesday Night
Partly cloudy, with a low around 10.
Wednesday
Mostly sunny, with a high near 25.
Wednesday Night
Mostly cloudy, with a low around 10.
Thursday
Partly sunny, with a high near 23.
Thursday Night
Partly cloudy, with a low around 9.
Friday
Mostly sunny, with a high near 25.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Islip NY
40.73°N 73.22°W (Elev. 7 ft)
40.73°N 73.22°W (Elev. 7 ft)
1:05 am EST Jan 24, 2026
7am EST Jan 24, 2026-6pm EST Jan 30, 2026
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