Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

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

A Few Clouds

51°F

11°C

Humidity 59%
Wind Speed NW 9 mph
Barometer 30.12 in (1019.8 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 6 Oct 7:56 am EDT
Detailed forecast for

Southwest Suffolk

Today
Sunny. Highs in the lower 60s. Northwest winds 10 to 15 mph with gusts up to 25 mph.
Tonight
Mostly clear. Lows in the lower 40s. Northwest winds 5 to 10 mph.
Wednesday
Sunny. Highs in the mid 60s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the afternoon.
Wednesday Night
Mostly clear. Not as cool with lows in the upper 50s. Southwest winds 15 to 20 mph.
Thursday
Sunny. Highs in the lower 70s. Southwest winds 10 to 15 mph with gusts up to 25 mph.
Thursday Night
Mostly clear. Lows in the mid 50s.
Friday
Sunny. Highs in the upper 60s.
Friday Night
Mostly clear. Lows in the mid 50s.
Saturday
Sunny. Highs in the mid 60s.
Saturday Night
Partly cloudy. Lows in the mid 50s.
Sunday
Mostly sunny. Highs in the upper 60s.
Sunday Night
Mostly cloudy with a 40 percent chance of showers. Lows in the upper 50s.
Columbus Day
Mostly cloudy with a 40 percent chance of showers. Highs in the upper 60s.



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308 AM EDT Tue Oct 6 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database