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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.

Fog

37°F

3°C

Humidity 100%
Wind Speed Calm
Barometer 30.02 in (1016.5 mb)
Dewpoint 37°F (3°C)
Visibility 0.13 mi
Last update 10 Mar 6:56 am EDT
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Today

    Today: Patchy fog before 11am. Otherwise, partly sunny, with a high near 62. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 62 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 40. Light south wind.

    Low: 40 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 60. Calm wind becoming south 5 to 9 mph in the morning.

    High: 60 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: A chance of rain before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a chance of rain after 2am. Mostly cloudy, with a low around 48. South wind 8 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    Low: 48 °F

    Chance
    Showers

  • Thursday

    Thursday: Rain likely before 5pm, then a chance of rain and snow. Cloudy, with a temperature rising to near 50 by 10am, then falling to around 43 during the remainder of the day. Northwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 50 °F⇓

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of rain and snow before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Chance
    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Increasing clouds, with a high near 45.

    High: 45 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 11am. Otherwise, partly sunny, with a high near 62. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 40. Light south wind.
Wednesday
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 60. Calm wind becoming south 5 to 9 mph in the morning.
Wednesday Night
A chance of rain before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a chance of rain after 2am. Mostly cloudy, with a low around 48. South wind 8 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Thursday
Rain likely before 5pm, then a chance of rain and snow. Cloudy, with a temperature rising to near 50 by 10am, then falling to around 43 during the remainder of the day. Northwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
A chance of rain and snow before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 30. Chance of precipitation is 30%.
Friday
Increasing clouds, with a high near 45.
Friday Night
Mostly cloudy, with a low around 35.
Saturday
Mostly sunny, with a high near 47.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
Cloudy, with a high near 50.
Sunday Night
Rain. Low around 40. Chance of precipitation is 80%.
Monday
Rain. High near 51. Chance of precipitation is 80%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.78°N 73.09°W (Elev. 49 ft)
Last Update:
2:07 am EDT Mar 10, 2026
Forecast Valid:
8am EDT Mar 10, 2026-6pm EDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation