Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

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

A Few Clouds

67°F

19°C

Humidity 91%
Wind Speed Calm
Barometer 29.84 in (1010.3 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 27 Jul 6:56 am EDT
Detailed forecast for

Northwest Suffolk

Today
Partly cloudy. Highs in the lower 80s. Southeast winds 5 to 10 mph.
Tonight
Partly cloudy in the evening, then becoming mostly cloudy. Humid with lows in the upper 60s. South winds 5 to 10 mph.
Tuesday
Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Humid with highs in the upper 70s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.
Tuesday Night
Showers with a chance of thunderstorms. Humid with lows in the upper 60s. Southeast winds 15 to 20 mph. Chance of rain near 100 percent.
Wednesday
Showers in the morning, then showers with a slight chance of thunderstorms in the afternoon. Humid with highs in the upper 70s. East winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent.
Wednesday Night
Showers with a chance of thunderstorms. Lows in the mid 60s. Chance of rain 80 percent.
Thursday
Showers likely with a chance of thunderstorms in the morning, then showers likely in the afternoon. Highs in the upper 70s. Chance of rain 60 percent.
Thursday Night
Mostly cloudy. A chance of showers in the evening. Lows in the mid 60s. Chance of rain 50 percent.
Friday
Mostly sunny. Highs in the lower 80s.
Friday Night
Partly cloudy. Lows in the upper 60s.
Saturday
Mostly sunny. Highs in the lower 80s.
Saturday Night
Partly cloudy in the evening, then becoming mostly cloudy. Lows around 70.
Sunday
Partly sunny. Highs in the lower 80s.



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546 AM EDT Mon Jul 27 2026
 
 

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