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

36°F

2°C

Humidity 93%
Wind Speed Calm
Barometer 29.98 in (1015.2 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 9 Mar 4:56 am EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Today

    Today: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 54. Southwest wind 5 to 10 mph.

    High: 54 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Patchy fog. Otherwise, mostly cloudy, with a low around 38. Southwest wind 8 to 10 mph.

    Low: 38 °F

    Patchy Fog

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 55. Southwest wind 7 to 10 mph.

    High: 55 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 40. Southwest wind 7 to 9 mph.

    Low: 40 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 49. South wind 10 to 17 mph.

    High: 49 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 45. Breezy.

    Low: 45 °F

    Chance Rain
    and Breezy

  • Thursday

    Thursday: Rain likely before 2pm, then a chance of rain and snow. Mostly cloudy, with a high near 51. Breezy. Chance of precipitation is 60%.

    High: 51 °F

    Breezy. Rain
    Likely then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of rain and snow before 8pm. Partly cloudy, with a low around 33. Breezy. Chance of precipitation is 30%.

    Low: 33 °F

    Breezy.
    Chance
    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 54. Southwest wind 5 to 10 mph.
Tonight
Patchy fog. Otherwise, mostly cloudy, with a low around 38. Southwest wind 8 to 10 mph.
Tuesday
Mostly cloudy, with a high near 55. Southwest wind 7 to 10 mph.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 40. Southwest wind 7 to 9 mph.
Wednesday
A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 49. South wind 10 to 17 mph.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 45. Breezy.
Thursday
Rain likely before 2pm, then a chance of rain and snow. Mostly cloudy, with a high near 51. Breezy. Chance of precipitation is 60%.
Thursday Night
A chance of rain and snow before 8pm. Partly cloudy, with a low around 33. Breezy. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 42.
Friday Night
A chance of rain between 8pm and 2am. Mostly cloudy, with a low around 38. Breezy. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 44. Breezy.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
Cloudy, with a high near 46. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Blue Point NY
 40.68°N 72.99°W (Elev. 0 ft)
Last Update:
1:57 am EDT Mar 9, 2026
Forecast Valid:
5am EDT Mar 9, 2026-6pm EDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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