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Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy and Breezy

47°F

8°C

Humidity 31%
Wind Speed NW 24 G 36 mph
Barometer 29.95 in (1014.2 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 14 Mar 12:56 pm EDT
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • This Afternoon

    This Afternoon: Sunny, with a high near 48. Breezy, with a west wind around 24 mph, with gusts as high as 40 mph.

    High: 48 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 30. West wind 6 to 11 mph becoming light northwest after midnight.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 45. Northeast wind 5 to 11 mph becoming southeast in the afternoon.

    High: 45 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Rain after 2am. Temperature falling to near 41 by 8pm, then rising to around 47 during the remainder of the night. Southeast wind 7 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 41 °F⇑

    Mostly Cloudy
    then Rain

  • Monday

    Monday: Rain, with thunderstorms also possible after 11am. Some of the storms could produce heavy rainfall. High near 56. Breezy, with a south wind 16 to 21 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 56 °F

    Heavy Rain
    and Breezy

  • Monday Night

    Monday Night: Rain before 5am, then a chance of rain and snow. The rain could be heavy at times. Low around 34. Breezy. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 34 °F

    Breezy. Heavy
    Rain then
    Rain/Snow

  • Tuesday

    Tuesday: A chance of rain and snow before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 43. Chance of precipitation is 30%.

    High: 43 °F

    Chance
    Rain/Snow
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 48. Breezy, with a west wind around 24 mph, with gusts as high as 40 mph.
Tonight
Mostly clear, with a low around 30. West wind 6 to 11 mph becoming light northwest after midnight.
Sunday
Partly sunny, with a high near 45. Northeast wind 5 to 11 mph becoming southeast in the afternoon.
Sunday Night
Rain after 2am. Temperature falling to near 41 by 8pm, then rising to around 47 during the remainder of the night. Southeast wind 7 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Rain, with thunderstorms also possible after 11am. Some of the storms could produce heavy rainfall. High near 56. Breezy, with a south wind 16 to 21 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain before 5am, then a chance of rain and snow. The rain could be heavy at times. Low around 34. Breezy. Chance of precipitation is 100%. Little or no snow accumulation expected.
Tuesday
A chance of rain and snow before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 43. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Mostly sunny, with a high near 44.
Thursday Night
Partly cloudy, with a low around 33.
Friday
Mostly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.78°N 73.09°W (Elev. 49 ft)
Last Update:
3:09 am EDT Mar 14, 2026
Forecast Valid:
1pm EDT Mar 14, 2026-6pm EDT Mar 20, 2026
 
Forecast Discussion
 
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