National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

47°F

8°C

Humidity 77%
Wind Speed NW 17 G 24 mph
Barometer 29.70 in (1005.7 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 12 Mar 10:56 am EDT
Extended Forecast for

Hauppauge NY

  • Today

    Today: Rain before 4pm, then snow, possibly mixed with rain. Temperature falling to around 37 by 5pm. Breezy, with a northwest wind 15 to 20 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 54 °F⇓

    Rain/Snow and
    Breezy

  • Tonight

    Tonight: Snow, possibly mixed with rain before 8pm. Low around 30. Northwest wind around 8 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Increasing clouds, with a high near 45. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 23 mph.

    High: 45 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 36. South wind 10 to 13 mph, with gusts as high as 28 mph.

    Low: 36 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 50. West wind 11 to 14 mph, with gusts as high as 25 mph.

    High: 50 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 32.

    Low: 32 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, with a high near 48.

    High: 48 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 40. Chance of precipitation is 80%.

    Low: 40 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain. High near 56. Chance of precipitation is 90%.

    High: 56 °F

    Rain

Detailed Forecast

Today
Rain before 4pm, then snow, possibly mixed with rain. Temperature falling to around 37 by 5pm. Breezy, with a northwest wind 15 to 20 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Tonight
Snow, possibly mixed with rain before 8pm. Low around 30. Northwest wind around 8 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Friday
Increasing clouds, with a high near 45. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 23 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 36. South wind 10 to 13 mph, with gusts as high as 28 mph.
Saturday
Sunny, with a high near 50. West wind 11 to 14 mph, with gusts as high as 25 mph.
Saturday Night
Increasing clouds, with a low around 32.
Sunday
Cloudy, with a high near 48.
Sunday Night
Rain, mainly after 2am. Low around 40. Chance of precipitation is 80%.
Monday
Rain. High near 56. Chance of precipitation is 90%.
Monday Night
Rain likely, mainly before 2am. Mostly cloudy, with a low around 32. Chance of precipitation is 70%.
Tuesday
A 30 percent chance of rain. Mostly sunny, with a high near 41.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Mostly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hauppauge NY
 40.82°N 73.2°W (Elev. 197 ft)
Last Update:
11:29 am EDT Mar 12, 2026
Forecast Valid:
11am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation