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.

Fair

21°F

-6°C

Humidity 43%
Wind Speed N 9 mph
Barometer 30.58 in (1035.6 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 2 Mar 4:56 am EST
Extended Forecast for

Blue Point NY

  • Today

    Today: Mostly sunny, with a high near 29. Wind chill values between 10 and 20. North wind around 6 mph becoming calm in the afternoon.

    High: 29 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a temperature falling to near 22 by 8pm, then rising to around 27 during the remainder of the night. Light south wind.

    Low: 22 °F⇑

    Mostly Clear

  • Tuesday

    Tuesday: Rain likely, possibly mixed with snow before 1pm, then rain. High near 41. Wind chill values between 25 and 35. Southeast wind 5 to 7 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow
    Likely then
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain. Low around 35. South wind around 7 mph becoming west after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly before 1pm. Mostly cloudy, with a high near 45. West wind 5 to 7 mph becoming south in the afternoon.

    High: 45 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Cloudy, with a low around 37.

    Low: 37 °F

    Chance Rain

  • Thursday

    Thursday: A 40 percent chance of rain before 1pm. Cloudy, with a high near 50.

    High: 50 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 50 percent chance of rain. Cloudy, with a low around 37.

    Low: 37 °F

    Chance Rain

  • Friday

    Friday: A 40 percent chance of rain before 1pm. Cloudy, with a high near 43.

    High: 43 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 29. Wind chill values between 10 and 20. North wind around 6 mph becoming calm in the afternoon.
Tonight
Mostly clear, with a temperature falling to near 22 by 8pm, then rising to around 27 during the remainder of the night. Light south wind.
Tuesday
Rain likely, possibly mixed with snow before 1pm, then rain. High near 41. Wind chill values between 25 and 35. Southeast wind 5 to 7 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday Night
Rain. Low around 35. South wind around 7 mph becoming west after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A 30 percent chance of rain, mainly before 1pm. Mostly cloudy, with a high near 45. West wind 5 to 7 mph becoming south in the afternoon.
Wednesday Night
A 50 percent chance of rain. Cloudy, with a low around 37.
Thursday
A 40 percent chance of rain before 1pm. Cloudy, with a high near 50.
Thursday Night
A 50 percent chance of rain. Cloudy, with a low around 37.
Friday
A 40 percent chance of rain before 1pm. Cloudy, with a high near 43.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Cloudy, with a high near 49.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 40.
Sunday
Mostly cloudy, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Blue Point NY
 40.75°N 73.04°W (Elev. 30 ft)
Last Update:
2:30 am EST Mar 2, 2026
Forecast Valid:
5am EST Mar 2, 2026-6pm EDT Mar 8, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation