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.

Light Rain

39°F

4°C

Humidity 93%
Wind Speed NE 16 G 28 mph
Barometer 29.75 in (1007.3 mb)
Dewpoint 37°F (3°C)
Visibility 7.00 mi
Wind Chill30°F (-1°C)
Last update 23 Mar 8:56 am EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Today

    Today: Rain, mainly before 11am, then a slight chance of showers after 2pm. Steady temperature around 40. North wind 14 to 17 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 40 °F

    Rain then
    Chance Rain

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 33. Wind chill values between 20 and 25. Breezy, with a north wind 13 to 20 mph.

    Low: 33 °F

    Mostly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 41. Wind chill values between 20 and 30. North wind 6 to 16 mph.

    High: 41 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 37. Southwest wind around 15 mph.

    Low: 37 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 44. Southwest wind 10 to 16 mph.

    High: 44 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 48.

    High: 48 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Rain likely after 2am. Mostly cloudy, with a low around 44. Breezy. Chance of precipitation is 60%.

    Low: 44 °F

    Breezy.
    Mostly Cloudy
    then Rain
    Likely

  • Friday

    Friday: Rain likely, mainly before 8am. Mostly cloudy, with a high near 48. Breezy. Chance of precipitation is 60%.

    High: 48 °F

    Rain Likely
    and Breezy

Detailed Forecast

Today
Rain, mainly before 11am, then a slight chance of showers after 2pm. Steady temperature around 40. North wind 14 to 17 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 33. Wind chill values between 20 and 25. Breezy, with a north wind 13 to 20 mph.
Tuesday
Sunny, with a high near 41. Wind chill values between 20 and 30. North wind 6 to 16 mph.
Tuesday Night
Increasing clouds, with a low around 37. Southwest wind around 15 mph.
Wednesday
Partly sunny, with a high near 44. Southwest wind 10 to 16 mph.
Wednesday Night
Mostly cloudy, with a low around 41.
Thursday
Mostly cloudy, with a high near 48.
Thursday Night
Rain likely after 2am. Mostly cloudy, with a low around 44. Breezy. Chance of precipitation is 60%.
Friday
Rain likely, mainly before 8am. Mostly cloudy, with a high near 48. Breezy. Chance of precipitation is 60%.
Friday Night
Partly cloudy, with a low around 30. Blustery.
Saturday
Sunny, with a high near 38.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Sunny, with a high near 43.
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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:
2:12 am EDT Mar 23, 2026
Forecast Valid:
9am EDT Mar 23, 2026-6pm EDT Mar 29, 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