Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
41°F
5°C
| Humidity | 93% |
| Wind Speed | S 5 mph |
| Barometer | 30.39 in (1029.1 mb) |
| Dewpoint | 39°F (4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 38°F (3°C) |
| Last update | 10 Apr 5:56 am EDT |
Extended Forecast for
Smithtown NY
Today
High: 61 °F
Decreasing
CloudsTonight
Low: 44 °F
Partly Cloudy
then Slight
Chance
ShowersSaturday
High: 60 °F
Sunny
Saturday Night
Low: 40 °F
Mostly Clear
Sunday
High: 55 °F
Mostly Sunny
Sunday Night
Low: 45 °F
Mostly Cloudy
Monday
High: 66 °F
Mostly Cloudy
Monday Night
Low: 53 °F
Partly Cloudy
Tuesday
High: 72 °F
Mostly Sunny
Detailed Forecast
Today
Mostly cloudy, then gradually becoming sunny, with a high near 61. South wind 6 to 11 mph.
Tonight
A 20 percent chance of showers after midnight. Increasing clouds, with a low around 44. Southwest wind 8 to 13 mph.
Saturday
Sunny, with a high near 60. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 40. Light north wind.
Sunday
Mostly sunny, with a high near 55. Calm wind becoming south 5 to 8 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 45.
Monday
Mostly cloudy, with a high near 66.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 72.
Tuesday Night
Mostly cloudy, with a low around 54.
Wednesday
Partly sunny, with a high near 72.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 55.
Thursday
Partly sunny, with a high near 72.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Smithtown NY
40.86°N 73.19°W (Elev. 98 ft)
40.86°N 73.19°W (Elev. 98 ft)
6:31 am EDT Apr 10, 2026
6am EDT Apr 10, 2026-6pm EDT Apr 16, 2026
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