Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast with Haze and Breezy
55°F
13°C
| Humidity | 77% |
| Wind Speed | NW 22 G 33 mph |
| Barometer | 29.61 in (1002.5 mb) |
| Dewpoint | 48°F (9°C) |
| Visibility | 6.00 mi |
| Wind Chill | 50°F (10°C) |
| Last update | 12 Mar 8:56 am EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Today
High: 52 °F⇓
Breezy.
Chance Rain
then
Rain/SnowTonight
Low: 29 °F
Rain/Snow
then Mostly
ClearFriday

High: 45 °F
Increasing
CloudsFriday Night

Low: 36 °F
Decreasing
CloudsSaturday

High: 50 °F
Sunny
Saturday Night

Low: 32 °F
Increasing
CloudsSunday

High: 47 °F
Cloudy
Sunday Night
Low: 41 °F
Chance Rain
then RainMonday

High: 57 °F
Rain and
Breezy
Detailed Forecast
Today
Rain before 3pm, then snow, possibly mixed with rain. Temperature falling to around 39 by 5pm. Breezy, with a northwest wind 16 to 24 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow, possibly mixed with rain before 8pm. Low around 29. Northwest wind 9 to 11 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday
Increasing clouds, with a high near 45. Wind chill values between 25 and 35 early. West wind 5 to 10 mph becoming south 12 to 17 mph in the afternoon.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 36. South wind 14 to 16 mph, with gusts as high as 26 mph.
Saturday
Sunny, with a high near 50. West wind 15 to 17 mph, with gusts as high as 28 mph.
Saturday Night
Increasing clouds, with a low around 32.
Sunday
Cloudy, with a high near 47.
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 34. Chance of precipitation is 70%.
Tuesday
A 30 percent chance of rain. Mostly sunny, with a high near 41.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 38.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
40.81°N 73.11°W (Elev. 98 ft)
40.81°N 73.11°W (Elev. 98 ft)
7:04 am EDT Mar 12, 2026
9am EDT Mar 12, 2026-6pm EDT Mar 18, 2026


