Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

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

Mostly Cloudy

40°F

4°C

Humidity 60%
Wind Speed NW 10 mph
Barometer 29.75 in (1007.3 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 14 Nov 9:56 am EST
Detailed forecast for

Southwest Suffolk

Today
Mostly sunny. Highs in the upper 40s. Northwest winds 15 to 20 mph. Gusts up to 30 mph this afternoon.
Tonight
Partly cloudy in the evening, then clearing. Lows in the mid 30s. Northwest winds 15 to 20 mph.
Sunday
Sunny. Highs around 50. Northwest winds 15 to 20 mph.
Sunday Night
Mostly clear. Lows in the mid 30s. Northwest winds 10 to 15 mph.
Monday
Sunny. Highs in the lower 50s. Northwest winds 5 to 10 mph with gusts up to 20 mph.
Monday Night
Mostly clear. Lows in the mid 30s.
Tuesday
Sunny. Highs in the mid 50s.
Tuesday Night
Mostly clear. Lows in the upper 30s.
Wednesday
Sunny. Highs in the upper 50s.
Wednesday Night
Mostly clear. Lows in the lower 40s.
Thursday
Sunny. Highs around 60.
Thursday Night
Partly cloudy. Lows in the lower 40s.
Friday
Mostly sunny. Highs in the lower 60s.



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204 AM EST Sat Nov 14 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database