National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fog

35°F

2°C

Humidity 100%
Wind Speed N 6 mph
Barometer 30.00 in (1016.0 mb)
Dewpoint 35°F (2°C)
Visibility 0.25 mi
Wind Chill30°F (-1°C)
Last update 1 Mar 2:56 am EST
Extended Forecast for

5 Miles SSE Blue Point NY

  • Overnight

    Overnight: Patchy dense fog before 4am. Otherwise, mostly cloudy, with a low around 30. Wind chill values between 20 and 25. North wind around 10 mph.

    Low: 30 °F

    Patchy Dense
    Fog

  • Sunday

    Sunday: Snow likely, mainly before 1pm. Cloudy, then gradual clearing during the afternoon, with a high near 35. Wind chill values between 20 and 25. North wind 13 to 15 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Snow Likely

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 19. Wind chill values between 5 and 15. North wind 14 to 16 mph.

    Low: 19 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 29. Wind chill values between 5 and 15. North wind 9 to 14 mph becoming light and variable in the afternoon.

    High: 29 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a temperature rising to around 31 by 5am. Light southeast wind increasing to 5 to 9 mph in the evening.

    Low: 26 °F⇑

    Mostly Clear

  • Tuesday

    Tuesday: A chance of snow before 10am, then a chance of rain and snow between 10am and 1pm, then rain after 1pm. High near 40. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Chance
    Rain/Snow
    then
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain. Low around 38. Chance of precipitation is 100%.

    Low: 38 °F

    Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain before 1pm. Partly sunny, with a high near 42.

    High: 42 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain

Detailed Forecast

Overnight
Patchy dense fog before 4am. Otherwise, mostly cloudy, with a low around 30. Wind chill values between 20 and 25. North wind around 10 mph.
Sunday
Snow likely, mainly before 1pm. Cloudy, then gradual clearing during the afternoon, with a high near 35. Wind chill values between 20 and 25. North wind 13 to 15 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly clear, with a low around 19. Wind chill values between 5 and 15. North wind 14 to 16 mph.
Monday
Mostly sunny, with a high near 29. Wind chill values between 5 and 15. North wind 9 to 14 mph becoming light and variable in the afternoon.
Monday Night
Mostly clear, with a temperature rising to around 31 by 5am. Light southeast wind increasing to 5 to 9 mph in the evening.
Tuesday
A chance of snow before 10am, then a chance of rain and snow between 10am and 1pm, then rain after 1pm. High near 40. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Tuesday Night
Rain. Low around 38. Chance of precipitation is 100%.
Wednesday
A 30 percent chance of rain before 1pm. Partly sunny, with a high near 42.
Wednesday Night
A 50 percent chance of rain. Cloudy, with a low around 38.
Thursday
A 40 percent chance of rain. Cloudy, with a high near 45.
Thursday Night
Rain likely. Cloudy, with a low around 39. Chance of precipitation is 60%.
Friday
A 50 percent chance of rain. Cloudy, with a high near 42.
Friday Night
A 40 percent chance of rain. Cloudy, with a low around 39.
Saturday
Cloudy, with a high near 47.
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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:
1:58 am EST Mar 1, 2026
Forecast Valid:
3am EST Mar 1, 2026-6pm EST Mar 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation