Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Light Rain Snow Fog/Mist
35°F
2°C
| Humidity | 93% |
| Wind Speed | W 12 mph |
| Barometer | 30.03 in (1016.9 mb) |
| Dewpoint | 33°F (1°C) |
| Visibility | 3.00 mi |
| Wind Chill | 27°F (-3°C) |
| Last update | 17 Jan 2:54 pm EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Winter Weather Advisory January 18, 10:00am until January 18, 10:00pm
This Afternoon
High: 43 °F
Rain/Snow
LikelyTonight
Low: 30 °F
Chance
Rain/SnowSunday
High: 35 °F
Rain/Snow
then SnowSunday Night
Low: 23 °F
Chance Snow
M.L.King Day
High: 34 °F
Mostly Sunny
Monday Night
Low: 17 °F
Partly Cloudy
Tuesday
High: 24 °F
Mostly Sunny
Tuesday Night
Low: 14 °F
Mostly Clear
Wednesday
High: 38 °F
Mostly Sunny
Detailed Forecast
This Afternoon
Rain likely before 4pm, then a chance of rain and snow. Cloudy, with a high near 43. Southwest wind around 9 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Tonight
A chance of rain and snow before 1am, then a slight chance of rain between 1am and 4am, then a chance of snow after 4am. Increasing clouds, with a low around 30. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Sunday
Periods of rain and snow, becoming all snow after 11am. High near 35. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
A 40 percent chance of snow before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 23. Northwest wind 3 to 6 mph.
M.L.King Day
Mostly sunny, with a high near 34. West wind 6 to 14 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
Mostly clear, with a low around 14.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 33.
Friday Night
Partly cloudy, with a low around 23.
Saturday
Partly sunny, with a high near 33.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
40.78°N 73.09°W (Elev. 49 ft)
40.78°N 73.09°W (Elev. 49 ft)
3:18 pm EST Jan 17, 2026
3pm EST Jan 17, 2026-6pm EST Jan 24, 2026
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