Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
N/A
| Humidity | NA |
| Wind Speed | W 8 mph |
| Barometer | 30.09 in |
| Dewpoint | N/A |
| Visibility | 10.00 mi |
| Last update | 13 Jan 1:56 am EST |
Extended Forecast for
Islip NY
Overnight
Low: 34 °F
Mostly Clear
Tuesday
High: 45 °F
Increasing
CloudsTuesday Night
Low: 42 °F
Mostly Cloudy
then Slight
Chance
ShowersWednesday
High: 47 °F
Cloudy
Wednesday Night
Low: 30 °F
Chance Rain
Thursday
High: 39 °F⇓
Partly Sunny
Thursday Night
Low: 17 °F
Mostly Clear
Friday
High: 35 °F
Mostly Sunny
Friday Night
Low: 28 °F
Mostly Cloudy
Detailed Forecast
Overnight
Mostly clear, with a steady temperature around 34. West wind around 8 mph, with gusts as high as 20 mph.
Tuesday
Increasing clouds, with a high near 45. West wind 7 to 11 mph, with gusts as high as 22 mph.
Tuesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a steady temperature around 42. Southwest wind around 10 mph, with gusts as high as 23 mph.
Wednesday
Cloudy, with a high near 47. Southwest wind 6 to 9 mph.
Wednesday Night
A 50 percent chance of rain. Cloudy, with a low around 30. Calm wind becoming west around 6 mph after midnight.
Thursday
Partly sunny, with a temperature falling to around 29 by 5pm.
Thursday Night
Mostly clear, with a low around 17.
Friday
Mostly sunny, with a high near 35.
Friday Night
Mostly cloudy, with a low around 28.
Saturday
Partly sunny, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 38.
Sunday Night
Mostly cloudy, with a low around 23.
M.L.King Day
Partly sunny, with a high near 33.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Islip NY
40.73°N 73.22°W (Elev. 7 ft)
40.73°N 73.22°W (Elev. 7 ft)
1:18 am EST Jan 13, 2026
2am EST Jan 13, 2026-6pm EST Jan 19, 2026
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