Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
44°F
7°C
| Humidity | 73% |
| Wind Speed | NW 15 mph |
| Barometer | 29.74 in (1007.1 mb) |
| Dewpoint | 36°F (2°C) |
| Visibility | 10.00 mi |
| Wind Chill | 37°F (3°C) |
| Last update | 12 Mar 11:56 am EDT |
Extended Forecast for
2 Miles NNW Stony Brook NY
This Afternoon

High: 53 °F⇓
Rain/Snow
Tonight
Low: 31 °F
Rain/Snow
then Mostly
ClearFriday

High: 45 °F
Increasing
CloudsFriday Night

Low: 38 °F
Decreasing
CloudsSaturday

High: 49 °F
Sunny
Saturday Night

Low: 33 °F
Increasing
CloudsSunday

High: 49 °F
Cloudy
Sunday Night
Low: 41 °F
Chance Rain
then RainMonday

High: 57 °F
Rain and
Breezy
Detailed Forecast
This Afternoon
Rain before 4pm, then snow, possibly mixed with rain. Temperature falling to around 37 by 5pm. Northwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow, possibly mixed with rain, becoming all snow after 7pm, then gradually ending. Low around 31. Northwest wind 10 to 13 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday
Increasing clouds, with a high near 45. West wind 6 to 15 mph becoming south in the afternoon.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 38. South wind 14 to 18 mph.
Saturday
Sunny, with a high near 49. West wind around 17 mph.
Saturday Night
Increasing clouds, with a low around 33.
Sunday
Cloudy, with a high near 49.
Sunday Night
Rain, mainly after 2am. Low around 41. Chance of precipitation is 80%.
Monday
Rain. High near 57. Breezy. Chance of precipitation is 90%.
Monday Night
Rain likely, mainly before 2am. Mostly cloudy, with a low around 33. Breezy. Chance of precipitation is 70%.
Tuesday
A 30 percent chance of rain. Mostly sunny, with a high near 42.
Tuesday Night
Partly cloudy, with a low around 26.
Wednesday
Mostly sunny, with a high near 39.
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)
11:29 am EDT Mar 12, 2026
12pm EDT Mar 12, 2026-6pm EDT Mar 18, 2026


