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

33°F

1°C

Humidity 66%
Wind Speed E 6 mph
Barometer 30.18 in (1022.1 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 2 Dec 2:56 am EST
Extended Forecast for

5 Miles SSE Blue Point NY

  • Overnight

    Overnight: Cloudy, with a steady temperature around 42. Southeast wind 11 to 13 mph.

    Low: 42 °F

    Cloudy

  • Tuesday

    Tuesday: Rain, mainly after 10am. High near 49. Breezy, with a south wind 15 to 22 mph becoming northeast in the afternoon. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 49 °F

    Rain and
    Breezy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain before 10pm. Cloudy during the early evening, then gradual clearing, with a low around 35. Windy, with a northwest wind around 26 mph.

    Low: 35 °F

    Windy. Chance
    Rain then
    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 41. Wind chill values between 25 and 35. Breezy, with a northwest wind 13 to 21 mph.

    High: 41 °F

    Sunny and
    Breezy then
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38. Breezy, with a west wind 10 to 15 mph increasing to 16 to 21 mph after midnight.

    Low: 38 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Thursday

    Thursday: Partly sunny, with a high near 41. Breezy.

    High: 41 °F

    Partly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19. Windy.

    Low: 19 °F

    Partly Cloudy
    and Windy

  • Friday

    Friday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of light snow after 4am. Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Light Snow

Detailed Forecast

Overnight
Cloudy, with a steady temperature around 42. Southeast wind 11 to 13 mph.
Tuesday
Rain, mainly after 10am. High near 49. Breezy, with a south wind 15 to 22 mph becoming northeast in the afternoon. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Tuesday Night
A 40 percent chance of rain before 10pm. Cloudy during the early evening, then gradual clearing, with a low around 35. Windy, with a northwest wind around 26 mph.
Wednesday
Sunny, with a high near 41. Wind chill values between 25 and 35. Breezy, with a northwest wind 13 to 21 mph.
Wednesday Night
Partly cloudy, with a low around 38. Breezy, with a west wind 10 to 15 mph increasing to 16 to 21 mph after midnight.
Thursday
Partly sunny, with a high near 41. Breezy.
Thursday Night
Partly cloudy, with a low around 19. Windy.
Friday
Mostly sunny, with a high near 38.
Friday Night
A 30 percent chance of light snow after 4am. Mostly cloudy, with a low around 29.
Saturday
A chance of rain and snow before 10am, then a chance of rain between 10am and 1pm. Partly sunny, with a high near 43. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
Partly sunny, with a high near 40.
Sunday Night
Mostly cloudy, with a low around 23.
Monday
Mostly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Blue Point NY
 40.68°N 72.99°W (Elev. 0 ft)
Last Update:
1:30 am EST Dec 2, 2025
Forecast Valid:
3am EST Dec 2, 2025-6pm EST Dec 8, 2025
 
Forecast Discussion
 
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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