Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
30°F
-1°C
| Humidity | 85% |
| Wind Speed | Calm |
| Barometer | 30.60 in (1036.3 mb) |
| Dewpoint | 26°F (-3°C) |
| Visibility | 10.00 mi |
| Last update | 9 Apr 1:56 am EDT |
Extended Forecast for
Islip Terrace NY
Overnight
Low: 32 °F
Frost
Thursday
High: 49 °F
Frost then
SunnyThursday Night
Low: 37 °F
Mostly Clear
Friday
High: 55 °F
Sunny
Friday Night
Low: 45 °F
Partly Cloudy
then Slight
Chance
ShowersSaturday
High: 58 °F
Becoming
SunnySaturday Night
Low: 40 °F
Mostly Clear
Sunday
High: 53 °F
Sunny
Sunday Night
Low: 44 °F
Mostly Cloudy
Detailed Forecast
Overnight
Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 32. Calm wind.
Thursday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 49. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 37. Calm wind.
Friday
Sunny, with a high near 55. Calm wind becoming south 5 to 9 mph in the morning.
Friday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 45. South wind around 7 mph.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Sunny, with a high near 53.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
Mostly cloudy, with a high near 63.
Monday Night
Mostly cloudy, with a low around 52.
Tuesday
Partly sunny, with a high near 69.
Tuesday Night
Mostly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 68.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Islip Terrace NY
40.75°N 73.18°W (Elev. 30 ft)
40.75°N 73.18°W (Elev. 30 ft)
5:30 pm EDT Apr 8, 2026
2am EDT Apr 9, 2026-6pm EDT Apr 15, 2026
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