Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

N/A

Humidity NA
Wind Speed SW 8 mph
Barometer 29.67 in
Dewpoint N/A
Visibility 10.00 mi
Last update 14 Jan 4:56 am EST
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Overnight

    Overnight: Isolated showers.  Cloudy, with a low around 41. Southwest wind around 13 mph.  Chance of precipitation is 20%.

    Low: 41 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Cloudy, with a high near 49. Southwest wind 8 to 11 mph.

    High: 49 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers, mainly after 10pm.  Cloudy, with a low around 34. South wind around 7 mph becoming west after midnight.

    Low: 34 °F

    Chance
    Showers

  • Thursday

    Thursday: A slight chance of rain and snow showers before 10am, then a slight chance of snow showers between 10am and 1pm.  Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 32 by 5pm. Wind chill values between 20 and 30. Breezy, with a west wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.  Chance of precipitation is 20%.

    High: 43 °F

    Slight Chance
    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19. West wind 15 to 17 mph, with gusts as high as 32 mph.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 36.

    High: 36 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain after 1pm.  Mostly cloudy, with a high near 44.

    High: 44 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Isolated showers. Cloudy, with a low around 41. Southwest wind around 13 mph. Chance of precipitation is 20%.
Wednesday
Cloudy, with a high near 49. Southwest wind 8 to 11 mph.
Wednesday Night
A 50 percent chance of showers, mainly after 10pm. Cloudy, with a low around 34. South wind around 7 mph becoming west after midnight.
Thursday
A slight chance of rain and snow showers before 10am, then a slight chance of snow showers between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 32 by 5pm. Wind chill values between 20 and 30. Breezy, with a west wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 19. West wind 15 to 17 mph, with gusts as high as 32 mph.
Friday
Sunny, with a high near 36.
Friday Night
Mostly cloudy, with a low around 29.
Saturday
A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 44.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 35.
Sunday Night
Partly cloudy, with a low around 21.
M.L.King Day
Mostly sunny, with a high near 35.
Monday Night
Mostly cloudy, with a low around 21.
Tuesday
Mostly sunny, with a high near 30.
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ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.81°N 73.11°W (Elev. 98 ft)
1:35 am EST Jan 14, 2026
5am EST Jan 14, 2026-6pm EST Jan 20, 2026
 
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Additional Resources

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