Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fog/Mist
63°F
17°C
| Humidity | 97% |
| Wind Speed | SW 9 mph |
| Barometer | 29.85 in (1010.8 mb) |
| Dewpoint | 62°F (17°C) |
| Visibility | 6.00 mi |
| Last update | 6 Nov 5:56 am EST |
Extended Forecast for
Smithtown NY
Today
High: 67 °F
Heavy Rain
Tonight
Low: 53 °F
Rain then
Chance RainSaturday
High: 64 °F
Mostly Sunny
Saturday Night
Low: 43 °F
Partly Cloudy
Sunday
High: 61 °F
Sunny
Sunday Night
Low: 43 °F
Mostly Clear
Monday
High: 58 °F
Sunny
Monday Night
Low: 40 °F
Partly Cloudy
Tuesday
High: 62 °F
Sunny
Detailed Forecast
Today
Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 67. South wind 5 to 7 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Tonight
Rain, mainly before 1am. Low around 53. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 64. Light northwest wind becoming west 5 to 9 mph in the morning.
Saturday Night
Partly cloudy, with a low around 43. West wind 10 to 13 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 61. West wind 10 to 14 mph.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 58.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Sunny, with a high near 62.
Tuesday Night
Mostly clear, with a low around 42.
Veterans Day
Sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Mostly sunny, with a high near 56.
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)
2:56 am EST Nov 6, 2026
6am EST Nov 6, 2026-6pm EST Nov 12, 2026
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