Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
30°F
-1°C
| Humidity | 43% |
| Wind Speed | Calm |
| Barometer | 29.95 in (1014.4 mb) |
| Dewpoint | 10°F (-12°C) |
| Visibility | 10.00 mi |
| Last update | 5 Feb 4:56 pm EST |
Extended Forecast for
2 Miles NNW Stony Brook NY
Extreme Cold Watch February 7, 06:00pm until February 8, 01:00pm
Tonight

Low: 19 °F
Increasing
CloudsFriday

High: 28 °F
Mostly Cloudy
Friday Night
Low: 25 °F
Chance Snow
then SnowSaturday

High: 25 °F⇓
Snow Likely
and WindySaturday Night

Low: 5 °F
Decreasing
Clouds and
WindySunday
High: 18 °F
Sunny and
Blustery then
SunnySunday Night

Low: 9 °F
Mostly Clear
Monday

High: 25 °F
Mostly Sunny
Monday Night

Low: 14 °F
Partly Cloudy
Detailed Forecast
Tonight
Increasing clouds, with a low around 19. Wind chill values between 10 and 15. Calm wind becoming northeast around 6 mph in the evening.
Friday
Mostly cloudy, with a high near 28. Wind chill values between 10 and 20. Northeast wind around 6 mph becoming calm in the afternoon.
Friday Night
Snow, mainly after 1am. Steady temperature around 25. Wind chill values between 20 and 25. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Saturday
Snow likely, mainly before 1pm. Cloudy, with a temperature falling to around 16 by 5pm. Wind chill values between -5 and 5. Windy, with a northwest wind 8 to 18 mph increasing to 21 to 31 mph in the afternoon. Winds could gust as high as 48 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 5. Windy, with a northwest wind 23 to 30 mph, with gusts as high as 44 mph.
Sunday
Sunny and cold, with a high near 18. Blustery.
Sunday Night
Mostly clear, with a low around 9.
Monday
Mostly sunny, with a high near 25.
Monday Night
Partly cloudy, with a low around 14.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 21.
Wednesday
A 30 percent chance of rain. Mostly sunny, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Mostly cloudy, with a high near 36.
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)
1:09 pm EST Feb 5, 2026
5pm EST Feb 5, 2026-6pm EST Feb 12, 2026



