Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Rain Fog/Mist and Breezy

59°F

15°C

Humidity 87%
Wind Speed N 23 G 45 mph
Barometer 29.69 in (1005.2 mb)
Dewpoint 55°F (13°C)
Visibility 5.00 mi
Last update 26 Sep 4:56 pm EDT
Extended Forecast for

East Islip NY

High Surf Advisory September 26, 05:56pm until September 27, 08:00pm
Coastal Flood Warning September 26, 05:56pm until September 27, 06:00pm
High Wind Warning until September 27, 12:00pm
Click here for hazard details and duration
High Surf Advisory
Coastal Flood Warning
High Wind Warning
  •  
    High Surf Advisory September 26, 05:56pm until September 27, 08:00pm
    Coastal Flood Warning September 26, 05:56pm until September 27, 06:00pm
    High Wind Warning until September 27, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 63 °F

    Rain and
    Windy

  • Tonight

    Tonight: Periods of rain and possibly a thunderstorm before 8pm, then rain between 8pm and 2am, then rain and possibly a thunderstorm after 2am. Some of the storms could produce heavy rainfall.  Low around 58. Windy, with a north wind 31 to 36 mph, with gusts as high as 55 mph.  Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 58 °F

    Heavy Rain
    and Windy

  • Sunday

    Sunday: Rain and possibly a thunderstorm before 11am, then rain likely between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall.  High near 68. Windy, with an east wind 22 to 30 mph, with gusts as high as 49 mph.  Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    High: 68 °F

    Heavy Rain
    and Windy

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm.  Low around 62. East wind 14 to 17 mph, with gusts as high as 29 mph.  Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 62 °F

    Showers

  • Monday

    Monday: Showers.  High near 67. East wind 11 to 13 mph, with gusts as high as 24 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Showers

  • Monday Night

    Monday Night: Showers likely before 8pm.  Mostly cloudy, with a low around 58. Chance of precipitation is 60%.

    Low: 58 °F

    Showers
    Likely then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Periods of rain and possibly a thunderstorm. High near 63. Windy, with a north wind around 30 mph, with gusts as high as 49 mph. Chance of precipitation is 90%.
Tonight
Periods of rain and possibly a thunderstorm before 8pm, then rain between 8pm and 2am, then rain and possibly a thunderstorm after 2am. Some of the storms could produce heavy rainfall. Low around 58. Windy, with a north wind 31 to 36 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Sunday
Rain and possibly a thunderstorm before 11am, then rain likely between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. High near 68. Windy, with an east wind 22 to 30 mph, with gusts as high as 49 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Sunday Night
Showers and possibly a thunderstorm. Low around 62. East wind 14 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Monday
Showers. High near 67. East wind 11 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Showers likely before 8pm. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Tuesday
Partly sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 72.
Wednesday Night
Mostly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 63.
Friday
Partly sunny, with a high near 74.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 61.
Saturday
A chance of showers. Partly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
East Islip NY
 40.73°N 73.19°W (Elev. 16 ft)
3:21 pm EDT Sep 26, 2026
5pm EDT Sep 26, 2026-6pm EDT Oct 3, 2026
 
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Additional Resources

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