Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
76°F
24°C
| Humidity | 47% |
| Wind Speed | NW 12 mph |
| Barometer | 30.13 in (1020.1 mb) |
| Dewpoint | 54°F (12°C) |
| Visibility | 10.00 mi |
| Heat Index | 78°F (26°C) |
| Last update | 7 Sep 12:56 pm EDT |
Extended Forecast for
Smithtown NY
Labor Day
High: 80 °F
Sunny
Tonight
Low: 62 °F
Mostly Clear
Tuesday
High: 82 °F
Mostly Sunny
Tuesday Night
Low: 65 °F
Partly Cloudy
Wednesday
High: 84 °F
Mostly Sunny
Wednesday Night
Low: 69 °F
Mostly Cloudy
Thursday
High: 85 °F
Mostly Sunny
then Chance
ShowersThursday Night
Low: 64 °F
Chance
ShowersFriday
High: 78 °F
Mostly Sunny
Detailed Forecast
Labor Day
Sunny, with a high near 80. Northwest wind around 10 mph.
Tonight
Mostly clear, with a low around 62. Northwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 82. Northwest wind 5 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 65. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 84. South wind 5 to 13 mph.
Wednesday Night
Mostly cloudy, with a low around 69.
Thursday
A 40 percent chance of showers after 2pm. Partly sunny, with a high near 85.
Thursday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 64.
Friday
Mostly sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
Mostly sunny, with a high near 81.
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)
2:23 am EDT Sep 7, 2026
1pm EDT Sep 7, 2026-6pm EDT Sep 13, 2026
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