Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

36°F

2°C

Humidity 86%
Wind Speed NE 7 mph
Barometer 29.93 in (1013.7 mb)
Dewpoint 32°F (0°C)
Visibility 9.00 mi
Wind Chill30°F (-1°C)
Last update 19 Feb 2:56 am EST
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Overnight

    Overnight: Areas of fog before 4am.  Otherwise, cloudy, with a low around 31. Northeast wind around 7 mph.

    Low: 31 °F

    Areas Fog

  • Thursday

    Thursday: Mostly cloudy, with a high near 41. Wind chill values between 25 and 35. Northeast wind 7 to 9 mph.

    High: 41 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 50 percent chance of rain after 4am.  Cloudy, with a low around 32. Wind chill values between 25 and 30. East wind 6 to 9 mph.

    Low: 32 °F

    Cloudy then
    Chance Rain

  • Friday

    Friday: Rain, mainly after 7am.  High near 41. East wind 9 to 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 41 °F

    Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain, mainly before 1am.  Mostly cloudy, with a low around 32. Northeast wind 5 to 8 mph becoming northwest after midnight.

    Low: 32 °F

    Chance Rain

  • Saturday

    Saturday: Mostly cloudy, with a high near 43.

    High: 43 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of rain and snow before 10pm, then a chance of snow between 10pm and 1am.  Mostly cloudy, with a low around 27. Chance of precipitation is 30%.

    Low: 27 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Sunday

    Sunday: A 40 percent chance of snow after 1pm.  Mostly cloudy, with a high near 37.

    High: 37 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow.  Cloudy, with a low around 27.

    Low: 27 °F

    Chance Snow

Detailed Forecast

Overnight
Areas of fog before 4am. Otherwise, cloudy, with a low around 31. Northeast wind around 7 mph.
Thursday
Mostly cloudy, with a high near 41. Wind chill values between 25 and 35. Northeast wind 7 to 9 mph.
Thursday Night
A 50 percent chance of rain after 4am. Cloudy, with a low around 32. Wind chill values between 25 and 30. East wind 6 to 9 mph.
Friday
Rain, mainly after 7am. High near 41. East wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 50 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 32. Northeast wind 5 to 8 mph becoming northwest after midnight.
Saturday
Mostly cloudy, with a high near 43.
Saturday Night
A chance of rain and snow before 10pm, then a chance of snow between 10pm and 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Sunday
A 40 percent chance of snow after 1pm. Mostly cloudy, with a high near 37.
Sunday Night
A 50 percent chance of snow. Cloudy, with a low around 27.
Monday
A 40 percent chance of snow before 1pm. Cloudy, with a high near 36.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
Sunny, with a high near 36.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Mostly cloudy, with a high near 40.
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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)
1:10 am EST Feb 19, 2026
3am EST Feb 19, 2026-6pm EST Feb 25, 2026
 
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