Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

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

Fair

24°F

-4°C

Humidity 81%
Wind Speed W 3 mph
Barometer 30.19 in (1022.5 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 27 Dec 11:56 pm EST
Detailed forecast for

Northwest Suffolk

Today
Partly sunny this morning, then mostly cloudy with a chance of freezing rain with a slight chance of rain this afternoon. Highs in the upper 30s. Northwest winds around 5 mph, becoming southwest this afternoon. Chance of precipitation 30 percent.
Tonight
Rain with a chance of freezing rain in the evening, then rain after midnight. Lows in the lower 30s. South winds 10 to 15 mph. Chance of precipitation 90 percent.
Monday
Rain. Highs in the lower 50s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 90 percent.
Monday Night
Partly cloudy and breezy. Lows in the mid 20s. West winds 15 to 25 mph with gusts up to 35 mph.
Tuesday
Partly sunny in the morning, then becoming mostly cloudy. Blustery, cooler with highs in the lower 30s. West winds 15 to 25 mph with gusts up to 40 mph.
Tuesday Night
Mostly cloudy and brisk. Lows in the mid 20s.
Wednesday
Partly sunny. Highs in the mid 30s.
Wednesday Night
Mostly cloudy. Lows in the mid 20s.
New Years Day
Partly sunny. A chance of snow in the afternoon. Highs in the lower 30s. Chance of snow 30 percent.
Thursday Night
Mostly cloudy. Lows around 20.
Friday
Mostly sunny. Highs around 30.
Friday Night
Partly cloudy. Lows around 21.
Saturday
Mostly sunny. Highs in the mid 30s.



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119 AM EST Sun Dec 28 2025
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database