Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79° N Lon: 73.1° W Elev: 98 ft.

Overcast

33°F

1°C

Humidity 72%
Wind Speed S 9 mph
Barometer 29.85 in (1011.1 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 10 Feb 7:56 pm EST
Detailed forecast for

Northwest Suffolk

Tonight
Rain with possible snow, freezing rain and freezing drizzle this evening, then rain with possible freezing rain, drizzle and freezing drizzle likely after midnight. Ice accumulation around a trace. Lows in the upper 20s. Southwest winds 5 to 10 mph. Chance of precipitation 90 percent.
Wednesday
Sunny, breezy with highs in the upper 30s. West winds 10 to 15 mph, increasing to 15 to 25 mph in the afternoon.
Wednesday Night
Mostly clear in the evening, then becoming partly cloudy. Brisk with lows in the mid 20s. West winds 15 to 25 mph.
Thursday
Sunny, brisk with highs in the mid 30s. Northwest winds 15 to 25 mph.
Thursday Night
Partly cloudy in the evening, then becoming mostly cloudy. Lows around 21. Northwest winds 15 to 20 mph.
Friday
Sunny. Highs in the mid 30s.
Friday Night
Mostly cloudy. Lows in the mid 20s.
Saturday
Mostly sunny. Highs in the upper 30s.
Saturday Night
Mostly clear. Lows in the mid 20s.
Sunday
Mostly sunny in the morning, then becoming mostly cloudy. Highs in the upper 30s.
Sunday Night
Cloudy. A chance of rain in the evening, then a chance of snow and rain after midnight. Lows around 30. Chance of precipitation 40 percent.
Washingtons Birthday
Partly sunny. A chance of snow in the morning, then a chance of rain and snow in the afternoon. Highs in the lower 40s. Chance of precipitation 40 percent.
Monday Night
Partly cloudy. Lows in the upper 20s.
Tuesday
Mostly sunny. Highs in the lower 40s.



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333 PM EST Tue Feb 10 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database