Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
11°F
-12°C
| Humidity | 42% |
| Wind Speed | NW 17 G 26 mph |
| Barometer | 30.50 in (1032.9 mb) |
| Dewpoint | -8°F (-22°C) |
| Visibility | 10.00 mi |
| Wind Chill | -6°F (-21°C) |
| Last update | 24 Jan 4:56 am EST |
Extended Forecast for
2 Miles NNW Stony Brook NY
Cold Weather Advisory January 24, 05:23am 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: 30 °F
Heavy Snow
Sunday Night
Low: 28 °F
Snow/Sleet
and BlusteryMonday
High: 30 °F
Snow Likely
Monday Night
Low: 13 °F
Partly Cloudy
Tuesday
High: 21 °F
Mostly Sunny
Tuesday Night
Low: 12 °F
Partly Cloudy
Detailed Forecast
Today
Mostly sunny and cold, with a high near 19. Wind chill values between -5 and 5. Northwest wind 9 to 14 mph, with gusts as high as 24 mph.
Tonight
A 30 percent chance of snow after 4am. Mostly cloudy, with a low around 13. Wind chill values between 5 and 10. North wind 6 to 8 mph.
Sunday
Snow, mainly after 7am. The snow could be heavy at times. High near 30. Wind chill values between 5 and 10. Northeast wind 7 to 12 mph increasing to 13 to 18 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, becoming all snow after 4am. Steady temperature around 28. Wind chill values between 10 and 20. Blustery, with a northeast wind 14 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 2 to 4 inches possible.
Monday
Snow likely, mainly before 1pm. Cloudy, with a high near 30. North wind 11 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Mostly sunny, with a high near 21.
Tuesday Night
Partly cloudy, with a low around 12.
Wednesday
Mostly sunny, with a high near 24.
Wednesday Night
Mostly cloudy, with a low around 12.
Thursday
Partly sunny, with a high near 22.
Thursday Night
Partly cloudy, with a low around 10.
Friday
Mostly sunny, with a high near 24.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles NNW Stony Brook NY
40.92°N 73.15°W (Elev. 36 ft)
40.92°N 73.15°W (Elev. 36 ft)
1:05 am EST Jan 24, 2026
5am EST Jan 24, 2026-6pm EST Jan 30, 2026
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