Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fog/Mist

35°F

2°C

Humidity 93%
Wind Speed SW 9 mph
Barometer 30.03 in (1017.0 mb)
Dewpoint 33°F (1°C)
Visibility 6.00 mi
Wind Chill28°F (-2°C)
Last update 17 Jan 3:56 pm EST
Extended Forecast for

5 Miles SSE Blue Point NY

Winter Weather Advisory January 18, 10:00am until January 18, 10:00pm
Click here for hazard details and duration
Winter Weather Advisory
  • This Afternoon

    This Afternoon: A 40 percent chance of rain.  Cloudy, with a steady temperature around 39. Southwest wind around 16 mph.

    High: 39 °F

    Chance Rain

  • Tonight

    Tonight: A chance of rain before 7pm, then a chance of rain after 1am.  Increasing clouds, with a low around 33. West wind 5 to 14 mph.  Chance of precipitation is 40%.

    Low: 33 °F

    Chance Rain

  • Sunday

    Sunday: Periods of rain and snow, becoming all snow after 11am.  High near 36. West wind 6 to 10 mph becoming northeast in the afternoon.  Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    High: 36 °F

    Rain/Snow
    then Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow before 1am.  Cloudy, then gradually becoming partly cloudy, with a low around 27. Wind chill values between 15 and 20. Northwest wind 10 to 14 mph.

    Low: 27 °F

    Chance Snow

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 34. Breezy, with a west wind 15 to 25 mph.

    High: 34 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 20. Windy.

    Low: 20 °F

    Partly Cloudy
    and Windy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 25. Breezy.

    High: 25 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 20. Breezy.

    Low: 20 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40. Breezy.

    High: 40 °F

    Sunny then
    Mostly Sunny
    and Breezy

Detailed Forecast

This Afternoon
A 40 percent chance of rain. Cloudy, with a steady temperature around 39. Southwest wind around 16 mph.
Tonight
A chance of rain before 7pm, then a chance of rain after 1am. Increasing clouds, with a low around 33. West wind 5 to 14 mph. Chance of precipitation is 40%.
Sunday
Periods of rain and snow, becoming all snow after 11am. High near 36. West wind 6 to 10 mph becoming northeast in the afternoon. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Sunday Night
A 50 percent chance of snow before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 27. Wind chill values between 15 and 20. Northwest wind 10 to 14 mph.
M.L.King Day
Mostly sunny, with a high near 34. Breezy, with a west wind 15 to 25 mph.
Monday Night
Partly cloudy, with a low around 20. Windy.
Tuesday
Mostly sunny, with a high near 25. Breezy.
Tuesday Night
Mostly clear, with a low around 20. Breezy.
Wednesday
Mostly sunny, with a high near 40. Breezy.
Wednesday Night
Mostly cloudy, with a low around 34. Breezy.
Thursday
Mostly cloudy, with a high near 38. Breezy.
Thursday Night
Partly cloudy, with a low around 24. Breezy.
Friday
Mostly sunny, with a high near 34.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 34.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Blue Point NY
 40.68°N 72.99°W (Elev. 0 ft)
3:18 pm EST Jan 17, 2026
4pm EST Jan 17, 2026-6pm EST Jan 24, 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