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.

Overcast

50°F

10°C

Humidity 86%
Wind Speed SE 13 mph
Barometer 30.30 in (1025.9 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 5 May 8:56 am EDT
Extended Forecast for

Islip NY

  • Today

    Today: Showers likely, mainly after 2pm. Cloudy, with a steady temperature around 50. Southeast wind around 11 mph. Chance of precipitation is 70%.

    High: 50 °F

    Chance
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: Showers. Temperature rising to around 55 by 4am. Southeast wind around 11 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 51 °F⇑

    Showers

  • Monday

    Monday: A 30 percent chance of showers, mainly before 2pm. Patchy fog before 11am. Otherwise, cloudy, with a high near 68. Southwest wind around 9 mph.

    High: 68 °F

    Chance
    Showers and
    Patchy Fog

  • Monday Night

    Monday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 55. Southwest wind 5 to 7 mph becoming northwest after midnight.

    Low: 55 °F

    Patchy Fog

  • Tuesday

    Tuesday: Mostly sunny, with a high near 72. North wind 6 to 9 mph becoming south in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.

    High: 72 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.

    Low: 54 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.

    High: 64 °F

    Showers
    Likely

Detailed Forecast

Today
Showers likely, mainly after 2pm. Cloudy, with a steady temperature around 50. Southeast wind around 11 mph. Chance of precipitation is 70%.
Tonight
Showers. Temperature rising to around 55 by 4am. Southeast wind around 11 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 30 percent chance of showers, mainly before 2pm. Patchy fog before 11am. Otherwise, cloudy, with a high near 68. Southwest wind around 9 mph.
Monday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 55. Southwest wind 5 to 7 mph becoming northwest after midnight.
Tuesday
Mostly sunny, with a high near 72. North wind 6 to 9 mph becoming south in the afternoon.
Tuesday Night
A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 53.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.
Wednesday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.
Thursday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Thursday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 61.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 48.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 61.
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Islip NY
 40.73°N 73.22°W (Elev. 7 ft)
Last Update:
6:47 am EDT May 5, 2024
Forecast Valid:
9am EDT May 5, 2024-6pm EDT May 11, 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