National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

68°F

20°C

Humidity 90%
Wind Speed NW 7 mph
Barometer 29.99 in (1015.4 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 4 Aug 12:56 am EDT
Extended Forecast for

2 Miles NNE Commack NY

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 64. North wind around 5 mph.

    Low: 64 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 81. Northeast wind around 6 mph becoming light and variable.

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 65. Southeast wind around 6 mph becoming calm after midnight.

    Low: 65 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 81. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 81 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 71. South wind 5 to 7 mph.

    Low: 71 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 64. North wind around 5 mph.
Tuesday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 81. Northeast wind around 6 mph becoming light and variable.
Tuesday Night
Mostly cloudy, with a low around 65. Southeast wind around 6 mph becoming calm after midnight.
Wednesday
Partly sunny, with a high near 81. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 71. South wind 5 to 7 mph.
Thursday
Mostly sunny, with a high near 86.
Thursday Night
A chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Friday
A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 87.
Friday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 72.
Saturday
A 40 percent chance of showers after 2pm. Partly sunny, with a high near 85.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 72.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 72.
Monday
Mostly sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Commack NY
 40.87°N 73.28°W (Elev. 148 ft)
Last Update:
10:50 pm EDT Aug 3, 2026
Forecast Valid:
1am EDT Aug 4, 2026-6pm EDT Aug 10, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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