Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
28°F
-2°C
| Humidity | 37% |
| Wind Speed | Calm |
| Barometer | 30.10 in (1019.6 mb) |
| Dewpoint | 5°F (-15°C) |
| Visibility | 10.00 mi |
| Last update | 26 Dec 3:56 pm EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Winter Storm Warning until December 27, 01:00pm
NOW until 1:00pm Sat
Winter Storm Warning
This Afternoon
High: 31 °F
Snow Likely
Tonight
Low: 26 °F⇑
Heavy Snow
Saturday
High: 33 °F
Snow Likely
then Partly
SunnySaturday Night
Low: 20 °F
Partly Cloudy
Sunday
High: 40 °F
Mostly Cloudy
Sunday Night
Low: 33 °F⇑
Rain
Monday
High: 51 °F
Rain
Monday Night
Low: 26 °F
Partly Cloudy
Detailed Forecast
This Afternoon
Snow likely. Cloudy, with a high near 31. East wind around 5 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than one inch possible.
Tonight
Snow. The snow could be heavy at times. Temperature rising to around 30 by 3am. Wind chill values between 20 and 25. Light east wind becoming northeast 5 to 10 mph in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Saturday
Snow likely, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 33. Wind chill values between 20 and 25. Northeast wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
Partly cloudy, with a low around 20. Light north wind.
Sunday
Mostly cloudy, with a high near 40. Calm wind becoming west 5 to 7 mph in the morning.
Sunday Night
Rain. Temperature rising to around 40 by 4am. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Rain. High near 51. Chance of precipitation is 90%.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 34.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
Partly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 22.
New Year's Day
Partly sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 28.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
40.8°N 73.09°W (Elev. 98 ft)
40.8°N 73.09°W (Elev. 98 ft)
1:55 pm EST Dec 26, 2025
4pm EST Dec 26, 2025-6pm EST Jan 2, 2026
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