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Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

44°F

7°C

Humidity 68%
Wind Speed NE 6 mph
Barometer 30.50 in (1032.9 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 10 Oct 1:56 am EDT
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

Coastal Flood Watch October 12, 08:00am until October 13, 06:00pm
High Wind Watch October 12, 12:00pm until October 13, 06:00am
Click here for hazard details and duration
Coastal Flood Watch
High Wind Watch

  • Overnight

    Overnight: Clear, with a low around 41. Northeast wind around 5 mph.

    Low: 41 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 63. Northeast wind 5 to 7 mph becoming southeast in the afternoon.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 52. Southeast wind 3 to 6 mph.

    Low: 52 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 69. East wind 5 to 13 mph.

    High: 69 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Rain likely, mainly after 2am. Cloudy, with a low around 56. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 56 °F

    Rain Likely

  • Sunday

    Sunday: Rain. High near 64. Breezy. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

    High: 64 °F

    Rain and
    Breezy

  • Sunday Night

    Sunday Night: Rain. Low around 55. Windy. Chance of precipitation is 80%.

    Low: 55 °F

    Rain and
    Windy

  • Columbus Day

    Columbus Day: Showers before 2pm, then rain likely after 2pm. High near 67. Windy. Chance of precipitation is 80%.

    High: 67 °F

    Showers and
    Windy

  • Monday Night

    Monday Night: Rain. Low around 54. Breezy. Chance of precipitation is 80%.

    Low: 54 °F

    Rain and
    Breezy

Detailed Forecast

Overnight
Clear, with a low around 41. Northeast wind around 5 mph.
Friday
Sunny, with a high near 63. Northeast wind 5 to 7 mph becoming southeast in the afternoon.
Friday Night
Mostly cloudy, with a low around 52. Southeast wind 3 to 6 mph.
Saturday
Mostly cloudy, with a high near 69. East wind 5 to 13 mph.
Saturday Night
Rain likely, mainly after 2am. Cloudy, with a low around 56. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Rain. High near 64. Breezy. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
Sunday Night
Rain. Low around 55. Windy. Chance of precipitation is 80%.
Columbus Day
Showers before 2pm, then rain likely after 2pm. High near 67. Windy. Chance of precipitation is 80%.
Monday Night
Rain. Low around 54. Breezy. Chance of precipitation is 80%.
Tuesday
Rain likely before 8am, then a chance of showers after 8am. Mostly cloudy, with a high near 67. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 67.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.8°N 73.09°W (Elev. 98 ft)
Last Update:
1:58 am EDT Oct 10, 2025
Forecast Valid:
2am EDT Oct 10, 2025-6pm EDT Oct 16, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation