Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

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

Mostly Cloudy

73°F

23°C

Humidity 84%
Wind Speed SW 6 mph
Barometer 29.84 in (1010.2 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 2 Jul 8:56 pm EDT
Detailed forecast for

Southwest Suffolk

Tonight
Partly cloudy. A slight chance of showers this evening. Patchy fog after midnight. Lows in the upper 60s. Southwest winds 5 to 10 mph, becoming west after midnight. Chance of rain 20 percent.
Thursday
Patchy fog in the morning. Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph, becoming southwest 10 to 15 mph in the afternoon.
Thursday Night
Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may produce gusty winds in the evening. Lows in the upper 60s. West winds 5 to 10 mph with gusts up to 20 mph, becoming northwest after midnight. Chance of rain 30 percent.
Independence Day
Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph, becoming west in the afternoon. Gusts up to 20 mph.
Friday Night
Mostly clear. Lows in the mid 60s. West winds 5 to 10 mph, becoming north after midnight.
Saturday
Sunny. Highs in the lower 80s.
Saturday Night
Partly cloudy. Lows in the upper 60s.
Sunday
Mostly sunny. Highs in the lower 80s.
Sunday Night
Partly cloudy. Lows in the lower 70s.
Monday
Mostly sunny. Highs in the mid 80s.
Monday Night
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 70s.
Tuesday
Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 40 percent.
Tuesday Night
Mostly cloudy. A chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the lower 70s. Chance of rain 40 percent.
Wednesday
Partly sunny. A chance of showers. Highs in the lower 80s. Chance of rain 40 percent.



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742 PM EDT Wed Jul 2 2025
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database