National Weather Service
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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.

Fog/Mist

65°F

18°C

Humidity 100%
Wind Speed SE 7 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 65°F (18°C)
Visibility 0.75 mi
Last update 26 May 11:56 pm EDT
Extended Forecast for

Commack NY

Dense Fog Advisory until May 27, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until May 27, 09:00am

    NOW until 9:00am Mon

    Dense Fog Advisory

  • Overnight

    Low: 62 °F

    Slight Chance
    Showers and
    Dense Fog

  • Memorial Day

    Memorial Day: Showers likely, mainly after 5pm. Widespread dense fog, mainly before 9am. Otherwise, cloudy, with a high near 72. Southeast wind 7 to 14 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 72 °F

    Showers
    Likely and
    Dense Fog

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 62. South wind 10 to 14 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 62 °F

    Showers

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 81. Southwest wind 7 to 10 mph.

    High: 81 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. West wind 6 to 9 mph.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers after 2pm. Sunny, with a high near 76.

    High: 76 °F

    Sunny then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

Detailed Forecast

Overnight
A 20 percent chance of showers after 2am. Widespread dense fog. Otherwise, cloudy, with a low around 62. Southeast wind around 5 mph.
Memorial Day
Showers likely, mainly after 5pm. Widespread dense fog, mainly before 9am. Otherwise, cloudy, with a high near 72. Southeast wind 7 to 14 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 62. South wind 10 to 14 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 81. Southwest wind 7 to 10 mph.
Tuesday Night
Mostly clear, with a low around 60. West wind 6 to 9 mph.
Wednesday
A 30 percent chance of showers after 2pm. Sunny, with a high near 76.
Wednesday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 54.
Thursday
Sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 53.
Friday
Sunny, with a high near 71.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 74.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Commack NY
 40.85°N 73.28°W (Elev. 144 ft)
Last Update:
11:47 pm EDT May 26, 2024
Forecast Valid:
12am EDT May 27, 2024-6pm EDT Jun 2, 2024
 
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