Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

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

Fair

45°F

7°C

Humidity 56%
Wind Speed Calm
Barometer 30.14 in (1020.7 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 4 Nov 10:56 pm EST
Detailed forecast for

Southwest Suffolk

Tonight
Mostly clear. Lows in the lower 40s. West winds 10 to 15 mph with gusts up to 25 mph.
Wednesday
Mostly sunny and breezy. Highs in the lower 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph, increasing to 15 to 25 mph with gusts up to 40 mph in the afternoon.
Wednesday Night
Mostly cloudy with a slight chance of rain in the evening, then partly cloudy after midnight. Very windy with lows in the mid 40s. Southwest winds 25 to 35 mph, becoming northwest after midnight. Gusts up to 60 mph. Chance of rain 20 percent.
Thursday
Sunny, breezy with highs in the mid 50s. Northwest winds 15 to 25 mph. Gusts up to 55 mph, decreasing to 35 mph in the afternoon.
Thursday Night
Mostly clear in the evening, then becoming partly cloudy. Areas of frost after midnight. Lows in the mid 30s. Northwest winds 15 to 20 mph, diminishing to 5 to 10 mph after midnight.
Friday
Mostly sunny in the morning, then becoming mostly cloudy. Breezy with highs around 60.
Friday Night
Cloudy. A chance of rain in the evening, then rain likely after midnight. Breezy and not as cool with lows in the lower 50s. Chance of rain 60 percent.
Saturday
Partly sunny. A chance of rain in the morning. Highs in the mid 60s. Chance of rain 40 percent.
Saturday Night
Partly cloudy. Lows in the mid 40s.
Sunday
Partly sunny in the morning, then becoming mostly cloudy. A 50 percent chance of rain. Highs around 60.
Sunday Night
Rain likely, mainly in the evening. Lows in the lower 40s. Chance of rain 60 percent.
Monday
Partly sunny. A chance of rain in the morning. Highs in the lower 50s. Chance of rain 50 percent.
Monday Night
Partly cloudy. Lows in the lower 30s.
Veterans Day
Mostly sunny and breezy. Highs in the upper 40s.



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315 PM EST Tue Nov 4 2025
 
 

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