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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
48°F
9°C
| Humidity | 74% |
| Wind Speed | Calm |
| Barometer | 29.99 in (1015.4 mb) |
| Dewpoint | 40°F (4°C) |
| Visibility | 10.00 mi |
| Last update | 11 Mar 1:56 am EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Overnight

Low: 41 °F
Patchy Fog
Wednesday

High: 55 °F
Chance
Showers and
Patchy FogWednesday Night

Low: 48 °F
Chance
ShowersThursday
High: 53 °F⇓
Rain Likely
then
Rain/Snow
LikelyThursday Night
Low: 29 °F
Chance
Rain/Snow
then Mostly
ClearFriday

High: 46 °F
Partly Sunny
Friday Night

Low: 35 °F
Decreasing
CloudsSaturday

High: 48 °F
Sunny
Saturday Night

Low: 32 °F
Partly Cloudy
Detailed Forecast
Overnight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 41. Calm wind.
Wednesday
A 30 percent chance of showers, mainly after 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 55. South wind 5 to 14 mph.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then a chance of rain and thunderstorms between 8pm and 2am, then a chance of rain after 2am. Mostly cloudy, with a low around 48. South wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Thursday
Rain likely before 5pm, then a chance of rain and snow. Cloudy, with a temperature falling to around 43 by 5pm. Northwest wind 14 to 17 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday Night
A chance of rain and snow before 8pm. Mostly cloudy, then gradually becoming clear, with a low around 29. Northwest wind 8 to 11 mph. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 46.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 35.
Saturday
Sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly cloudy, with a high near 49.
Sunday Night
Rain. Low around 42. Chance of precipitation is 80%.
Monday
Rain. High near 53. Breezy. Chance of precipitation is 80%.
Monday Night
Rain and snow likely. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.
Tuesday
A 30 percent chance of snow. Mostly sunny, with a high near 37.
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)
9:48 pm EDT Mar 10, 2026
2am EDT Mar 11, 2026-6pm EDT Mar 17, 2026


