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

42°F

6°C

Humidity 82%
Wind Speed E 3 mph
Barometer 30.12 in
Dewpoint 37°F (3°C)
Visibility 6.00 mi
Last update 10 Jan 2:56 pm EST
Extended Forecast for

5 Miles SSE Blue Point NY

  • This Afternoon

    This Afternoon: Rain. High near 43. East wind around 16 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 43 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 4am. Low around 40. East wind 10 to 18 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 40 °F

    Rain

  • Sunday

    Sunday: A chance of rain before 10am, then a slight chance of rain and snow showers after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 42. Breezy, with a west wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Chance of precipitation is 30%.

    High: 42 °F

    Chance Rain
    then Slight
    Chance
    Rain/Snow and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 31. Wind chill values between 15 and 25. Windy, with a west wind 30 to 33 mph.

    Low: 31 °F

    Partly Cloudy
    and Windy

  • Monday

    Monday: Sunny, with a high near 39. Windy, with a west wind 17 to 26 mph.

    High: 39 °F

    Mostly Sunny
    and Windy
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 35. Breezy.

    Low: 35 °F

    Mostly Clear
    and Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 44.

    High: 44 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. Breezy.

    Low: 41 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Cloudy, with a high near 44.

    High: 44 °F

    Cloudy

Detailed Forecast

This Afternoon
Rain. High near 43. East wind around 16 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain, mainly before 4am. Low around 40. East wind 10 to 18 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
A chance of rain before 10am, then a slight chance of rain and snow showers after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 42. Breezy, with a west wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 31. Wind chill values between 15 and 25. Windy, with a west wind 30 to 33 mph.
Monday
Sunny, with a high near 39. Windy, with a west wind 17 to 26 mph.
Monday Night
Mostly clear, with a low around 35. Breezy.
Tuesday
Sunny, with a high near 44.
Tuesday Night
Mostly cloudy, with a low around 41. Breezy.
Wednesday
Cloudy, with a high near 44.
Wednesday Night
A 30 percent chance of rain. Cloudy, with a low around 33.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Mostly sunny, with a high near 35.
Friday Night
Partly cloudy, with a low around 30.
Saturday
Mostly sunny, with a high near 39.
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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:
1:33 pm EST Jan 10, 2026
Forecast Valid:
3pm EST Jan 10, 2026-6pm EST Jan 17, 2026
 
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