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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
45°F
7°C
| Humidity | 48% |
| Wind Speed | N 14 G 26 mph |
| Barometer | 30.38 in (1028.9 mb) |
| Dewpoint | 26°F (-3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 39°F (4°C) |
| Last update | 17 Oct 10:56 pm EDT |
Extended Forecast for
Smithtown NY
Tonight
Low: 38 °F
Clear
Sunday
High: 57 °F
Sunny
Sunday Night
Low: 42 °F
Clear
Monday
High: 62 °F
Increasing
CloudsMonday Night
Low: 45 °F
Mostly Cloudy
Tuesday
High: 64 °F
Partly Sunny
Tuesday Night
Low: 46 °F
Partly Cloudy
Wednesday
High: 60 °F
Mostly Sunny
Wednesday Night
Low: 44 °F
Mostly Cloudy
Detailed Forecast
Tonight
Clear, with a low around 38. North wind 8 to 11 mph.
Sunday
Sunny, with a high near 57. Northeast wind 6 to 8 mph.
Sunday Night
Clear, with a low around 42. Calm wind.
Monday
Increasing clouds, with a high near 62. Northeast wind 8 to 10 mph.
Monday Night
Mostly cloudy, with a low around 45. North wind 8 to 13 mph.
Tuesday
Partly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
Mostly cloudy, with a low around 44.
Thursday
Partly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 62.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 60.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Smithtown NY
40.84°N 73.22°W (Elev. 49 ft)
40.84°N 73.22°W (Elev. 49 ft)
8:48 pm EDT Oct 17, 2026
11pm EDT Oct 17, 2026-6pm EDT Oct 24, 2026
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