On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Heat continues across parts of central, eastern U.S.

Higher-than-normal temperatures will continue across parts of the central and eastern U.S. on Thursday with afternoon highs reaching 20-25 degrees above normal for some locations. One of the warmest areas will be the northern Plains, where high temperatures could reach 100 degrees. Remember to limit time spent outside during excessive heat and take proper precautions to avoid heat-related illness.
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Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

88°F

31°C

Humidity 46%
Wind Speed N 5 mph
Barometer 29.84 in (1010.3 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 3 Sep 12:56 pm EDT
Extended Forecast for

Holtsville NY

  • This
    Afternoon

    This Afternoon: Mostly sunny, with a high near 88. Calm wind becoming south around 6 mph.

    Mostly Sunny

    High: 88 °F

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly between midnight and 3am.  Increasing clouds, with a low around 69. Light and variable wind.  Chance of precipitation is 30%.

    Chance
    T-storms

    Low: 69 °F

  • Friday

    Friday: Mostly cloudy, with a high near 81. East wind 9 to 15 mph.

    Mostly Cloudy

    High: 81 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 61. East wind 9 to 13 mph.

    Mostly Clear

    Low: 61 °F

  • Saturday

    Saturday: Sunny, with a high near 81. East wind 10 to 14 mph.

    Sunny

    High: 81 °F

  • Saturday
    Night

    Saturday Night: Clear, with a low around 60.

    Clear

    Low: 60 °F

  • Sunday

    Sunday: Sunny, with a high near 85.

    Sunny

    High: 85 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 66.

    Mostly Clear

    Low: 66 °F

  • Labor
    Day

    Labor Day: Mostly sunny, with a high near 84.

    Mostly Sunny

    High: 84 °F

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 88. Calm wind becoming south around 6 mph.
Tonight
A chance of showers and thunderstorms, mainly between midnight and 3am. Increasing clouds, with a low around 69. Light and variable wind. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 81. East wind 9 to 15 mph.
Friday Night
Mostly clear, with a low around 61. East wind 9 to 13 mph.
Saturday
Sunny, with a high near 81. East wind 10 to 14 mph.
Saturday Night
Clear, with a low around 60.
Sunday
Sunny, with a high near 85.
Sunday Night
Mostly clear, with a low around 66.
Labor Day
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 84.
  Click Map For Forecast
Point Forecast:
Holtsville NY
 40.82°N 73.05°W (Elev. 112 ft)
12:52 pm EDT Sep 3, 2015
1pm EDT Sep 3, 2015-6pm EDT Sep 9, 2015
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database