Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

54°F

12°C

Humidity 40%
Wind Speed N 13 mph
Barometer 29.89 in (1012.1 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 21 Mar 3:56 pm EDT
Extended Forecast for

Hauppauge NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. North wind 6 to 11 mph becoming light and variable.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers before 11am, then a chance of showers after 5pm.  Mostly cloudy, with a high near 57. South wind 7 to 11 mph.  Chance of precipitation is 30%.

    High: 57 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 9pm, then rain after 9pm.  Low around 39. Light and variable wind becoming north around 6 mph in the evening.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Showers

  • Monday

    Monday: A 40 percent chance of rain before 2pm.  Cloudy, then gradually becoming mostly sunny, with a high near 47. North wind 8 to 10 mph.

    High: 47 °F

    Chance Rain

  • Monday Night

    Monday Night: Mostly clear, with a low around 30. North wind around 7 mph.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Wednesday Night

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

    Low: 35 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 39. North wind 6 to 11 mph becoming light and variable.
Sunday
A slight chance of showers before 11am, then a chance of showers after 5pm. Mostly cloudy, with a high near 57. South wind 7 to 11 mph. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 9pm, then rain after 9pm. Low around 39. Light and variable wind becoming north around 6 mph in the evening. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 40 percent chance of rain before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 47. North wind 8 to 10 mph.
Monday Night
Mostly clear, with a low around 30. North wind around 7 mph.
Tuesday
Sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Partly sunny, with a high near 50.
Wednesday Night
Mostly cloudy, with a low around 35.
Thursday
A chance of rain between 8am and 2pm. Mostly cloudy, with a high near 51. Chance of precipitation is 30%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 49.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
Hauppauge NY
 40.82°N 73.2°W (Elev. 197 ft)
3:03 pm EDT Mar 21, 2026
4pm EDT Mar 21, 2026-6pm EDT Mar 28, 2026
 
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Additional Resources

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