Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
60°F
16°C
| Humidity | 84% |
| Wind Speed | W 9 mph |
| Barometer | 29.96 in (1014.6 mb) |
| Dewpoint | 55°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 5 Oct 8:56 am EDT |
Extended Forecast for
Smithtown NY
Today
High: 71 °F
Mostly Sunny
Tonight
Low: 46 °F
Mostly Clear
Tuesday
High: 64 °F
Sunny
Tuesday Night
Low: 44 °F
Clear
Wednesday
High: 65 °F
Sunny
Wednesday Night
Low: 56 °F
Mostly Clear
Thursday
High: 71 °F
Sunny
Thursday Night
Low: 55 °F
Mostly Clear
Friday
High: 69 °F
Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 71. Northwest wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph.
Tonight
Mostly clear, with a low around 46. Northwest wind around 11 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 64. Northwest wind 10 to 14 mph.
Tuesday Night
Clear, with a low around 44. Northwest wind 5 to 7 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 65. Light southwest wind increasing to 6 to 11 mph in the morning.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 65.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Smithtown NY
40.86°N 73.22°W (Elev. 82 ft)
40.86°N 73.22°W (Elev. 82 ft)
9:10 am EDT Oct 5, 2026
9am EDT Oct 5, 2026-6pm EDT Oct 11, 2026
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