Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
70°F
21°C
| Humidity | 100% |
| Wind Speed | SW 7 mph |
| Barometer | 29.97 in (1014.8 mb) |
| Dewpoint | 70°F (21°C) |
| Visibility | 10.00 mi |
| Last update | 3 Sep 5:56 am EDT |
Extended Forecast for
Smithtown NY
Today
High: 83 °F
Chance
ShowersTonight
Low: 69 °F
Chance
ShowersFriday
High: 83 °F
Partly Sunny
then Chance
ShowersFriday Night
Low: 64 °F
Partly Cloudy
Saturday
High: 77 °F
Sunny
Saturday Night
Low: 58 °F
Partly Cloudy
Sunday
High: 73 °F
Mostly Sunny
Sunday Night
Low: 58 °F
Mostly Clear
Labor Day
High: 76 °F
Sunny
Detailed Forecast
Today
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 83. West wind 7 to 9 mph. Chance of precipitation is 40%.
Tonight
A chance of showers and thunderstorms between 11pm and 2am, then a slight chance of showers. Mostly cloudy, with a low around 69. Light southwest wind. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers, mainly between 2pm and 5pm. Partly sunny, with a high near 83. Northwest wind 3 to 7 mph.
Friday Night
Partly cloudy, with a low around 64. Northwest wind 3 to 7 mph.
Saturday
Sunny, with a high near 77. North wind 8 to 10 mph.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
Mostly clear, with a low around 58.
Labor Day
Sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Mostly cloudy, with a low around 62.
Wednesday
Partly sunny, with a high near 76.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Smithtown NY
40.86°N 73.19°W (Elev. 98 ft)
40.86°N 73.19°W (Elev. 98 ft)
5:34 am EDT Sep 3, 2026
6am EDT Sep 3, 2026-6pm EDT Sep 9, 2026
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