Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
41°F
5°C
| Humidity | 89% |
| Wind Speed | Calm |
| Barometer | 30.08 in (1018.5 mb) |
| Dewpoint | 38°F (3°C) |
| Visibility | 10.00 mi |
| Last update | 7 Apr 4:56 am EDT |
Extended Forecast for
2 Miles NNW Stony Brook NY
Overnight

Low: 40 °F
Chance
ShowersTuesday
High: 52 °F
Chance
Showers then
Mostly Sunny
and BreezyTuesday Night
Low: 30 °F
Mostly Clear
and Blustery
then Mostly
ClearWednesday

High: 47 °F
Sunny
Wednesday Night

Low: 32 °F
Mostly Clear
Thursday

High: 52 °F
Mostly Sunny
Thursday Night

Low: 39 °F
Partly Cloudy
Friday

High: 59 °F
Mostly Sunny
Friday Night

Low: 46 °F
Partly Cloudy
Detailed Forecast
Overnight
A 30 percent chance of showers. Mostly cloudy, with a low around 40. Southeast wind around 7 mph.
Tuesday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 52. Breezy, with a west wind 5 to 10 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph.
Tuesday Night
Mostly clear, with a low around 30. Wind chill values between 20 and 25. Blustery, with a north wind 13 to 22 mph.
Wednesday
Sunny, with a high near 47. Wind chill values between 20 and 30 early. North wind 9 to 13 mph becoming southeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 32. South wind 5 to 8 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 52.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 59.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Mostly clear, with a low around 44.
Sunday
Sunny, with a high near 59.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 67.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
2 Miles NNW Stony Brook NY
40.92°N 73.15°W (Elev. 36 ft)
40.92°N 73.15°W (Elev. 36 ft)
4:36 am EDT Apr 7, 2026
5am EDT Apr 7, 2026-6pm EDT Apr 13, 2026


