Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair and Breezy
14°F
-10°C
| Humidity | 58% |
| Wind Speed | N 23 G 36 mph |
| Barometer | 29.91 in (1012.9 mb) |
| Dewpoint | 2°F (-17°C) |
| Visibility | 10.00 mi |
| Wind Chill | -5°F (-21°C) |
| Last update | 1 Feb 1:56 am EST |
Extended Forecast for
2 Miles NNW Stony Brook NY
Cold Weather Advisory February 1, 02:41am until February 1, 10:00am
NOW until 10:00am Sun

Cold Weather Advisory
Overnight

Low: 13 °F
Cloudy and
BlusterySunday

High: 23 °F
Mostly Cloudy
and BlusterySunday Night

Low: 15 °F
Mostly Cloudy
Monday

High: 31 °F
Sunny
Monday Night

Low: 16 °F
Mostly Clear
Tuesday

High: 31 °F
Sunny
Tuesday Night

Low: 20 °F
Partly Cloudy
Wednesday

High: 31 °F
Partly Sunny
Detailed Forecast
Overnight
Cloudy, with a low around 13. Wind chill values between -5 and zero. Blustery, with a north wind around 21 mph.
Sunday
Mostly cloudy, with a high near 23. Wind chill values between -5 and 5. Blustery, with a north wind 20 to 25 mph, with gusts as high as 37 mph.
Sunday Night
Mostly cloudy, with a low around 15. Wind chill values between zero and 5. Northwest wind 14 to 18 mph.
Monday
Sunny, with a high near 31. Wind chill values between zero and 10. Northwest wind 10 to 13 mph.
Monday Night
Mostly clear, with a low around 16. Northwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 31.
Tuesday Night
Partly cloudy, with a low around 20.
Wednesday
Partly sunny, with a high near 31.
Wednesday Night
Partly cloudy, with a low around 15.
Thursday
Sunny, with a high near 29.
Thursday Night
Partly cloudy, with a low around 15.
Friday
A 30 percent chance of snow. Mostly cloudy, with a high near 31.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 16.
Saturday
Mostly sunny, with a high near 23. Blustery.
Additional Forecasts and Information
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ABOUT 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)
1:11 am EST Feb 1, 2026
2am EST Feb 1, 2026-6pm EST Feb 7, 2026



