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.

28°F

-2°C

Humidity 60%
Wind Speed NW 13 mph
Barometer 29.75 in (1007.5 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 24 Feb 2:56 am EST
Extended Forecast for

Saint James NY

  • Overnight

    Overnight: Patchy blowing snow. Partly cloudy, with a steady temperature around 25. Wind chill values between 15 and 20. Northwest wind around 9 mph.

    Low: 25 °F

    Patchy
    Blowing Snow

  • Tuesday

    Tuesday: Patchy blowing snow before 7am. Mostly sunny, with a high near 29. Wind chill values between 10 and 20. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 29 °F

    Patchy
    Blowing Snow
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow after 4am. Increasing clouds, with a temperature falling to near 19 by 10pm, then rising to around 30 during the remainder of the night. West wind around 6 mph becoming calm.

    Low: 19 °F⇑

    Partly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: Snow likely, possibly mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 39. Wind chill values between 25 and 30. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. West wind around 6 mph.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain and snow after 1pm. Partly sunny, with a high near 37. Chance of precipitation is 50%.

    High: 37 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.

    Low: 27 °F

    Snow Likely

  • Friday

    Friday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy blowing snow. Partly cloudy, with a steady temperature around 25. Wind chill values between 15 and 20. Northwest wind around 9 mph.
Tuesday
Patchy blowing snow before 7am. Mostly sunny, with a high near 29. Wind chill values between 10 and 20. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A 50 percent chance of snow after 4am. Increasing clouds, with a temperature falling to near 19 by 10pm, then rising to around 30 during the remainder of the night. West wind around 6 mph becoming calm.
Wednesday
Snow likely, possibly mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 39. Wind chill values between 25 and 30. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 29. West wind around 6 mph.
Thursday
A chance of rain and snow after 1pm. Partly sunny, with a high near 37. Chance of precipitation is 50%.
Thursday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 36.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 38.
Sunday Night
Partly cloudy, with a low around 17.
Monday
A 30 percent chance of snow. Mostly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint James NY
 40.88°N 73.16°W (Elev. 148 ft)
Last Update:
1:15 am EST Feb 24, 2026
Forecast Valid:
3am EST Feb 24, 2026-6pm EST Mar 2, 2026
 
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Additional Resources

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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