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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
61°F
16°C
| Humidity | 43% |
| Wind Speed | NE 14 mph |
| Barometer | 30.40 in (1029.5 mb) |
| Dewpoint | 38°F (3°C) |
| Visibility | 10.00 mi |
| Last update | 19 Oct 12:56 pm EDT |
Extended Forecast for
Smithtown NY
This Afternoon
High: 61 °F
Mostly Sunny
Tonight
Low: 48 °F
Partly Cloudy
Tuesday
High: 64 °F
Mostly Cloudy
Tuesday Night
Low: 46 °F
Partly Cloudy
Wednesday
High: 59 °F
Mostly Sunny
Wednesday Night
Low: 43 °F
Partly Cloudy
Thursday
High: 64 °F
Sunny
Thursday Night
Low: 45 °F
Mostly Clear
Friday
High: 58 °F
Sunny
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 61. Northeast wind around 10 mph.
Tonight
Partly cloudy, with a low around 48. North wind 7 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 64. North wind around 14 mph, with gusts as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 46. Northeast wind 10 to 15 mph, with gusts as high as 28 mph.
Wednesday
Mostly sunny, with a high near 59. Northeast wind 13 to 16 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 64.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 58.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 43.
Sunday
Sunny, with a high near 63.
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)
5:21 am EDT Oct 19, 2026
1pm EDT Oct 19, 2026-6pm EDT Oct 25, 2026
Additional Resources
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