Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
31°F
-1°C
| Humidity | 38% |
| Wind Speed | S 8 mph |
| Barometer | 30.07 in (1018.2 mb) |
| Dewpoint | 8°F (-13°C) |
| Visibility | 10.00 mi |
| Wind Chill | 24°F (-4°C) |
| Last update | 10 Feb 12:56 pm EST |
Extended Forecast for
Port Jefferson NY
Winter Weather Advisory February 10, 06:00pm until February 11, 06:00am
This Afternoon

High: 34 °F
Slight Chance
SnowTonight

Low: 28 °F
Wintry Mix
Wednesday

High: 38 °F
Sunny
Wednesday Night

Low: 24 °F
Partly Cloudy
Thursday

High: 33 °F
Sunny
Thursday Night

Low: 19 °F
Partly Cloudy
Friday

High: 33 °F
Sunny
Friday Night

Low: 25 °F
Mostly Cloudy
Saturday

High: 38 °F
Mostly Sunny
Detailed Forecast
This Afternoon
A slight chance of snow before 4pm, then a slight chance of snow after 5pm. Mostly cloudy, with a high near 34. South wind around 6 mph. Chance of precipitation is 20%.
Tonight
Rain, snow, and freezing rain, becoming all freezing rain after 3am, then gradually ending. Low around 28. Light and variable wind becoming west around 5 mph after midnight. Chance of precipitation is 90%. New ice accumulation of less than a 0.1 of an inch possible. Little or no snow accumulation expected.
Wednesday
Sunny, with a high near 38. Wind chill values between 25 and 30. West wind 7 to 17 mph, with gusts as high as 29 mph.
Wednesday Night
Partly cloudy, with a low around 24. Wind chill values between 15 and 20. West wind around 16 mph, with gusts as high as 26 mph.
Thursday
Sunny, with a high near 33. Northwest wind around 17 mph, with gusts as high as 28 mph.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Sunny, with a high near 33.
Friday Night
Mostly cloudy, with a low around 25.
Saturday
Mostly sunny, with a high near 38.
Saturday Night
Mostly clear, with a low around 25.
Sunday
Partly sunny, with a high near 37.
Sunday Night
A chance of rain and snow. Cloudy, with a low around 30. Chance of precipitation is 40%.
Washington's Birthday
A chance of rain and snow. Partly sunny, with a high near 40. Chance of precipitation is 40%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Port Jefferson NY
40.93°N 73.06°W (Elev. 161 ft)
40.93°N 73.06°W (Elev. 161 ft)
1:06 pm EST Feb 10, 2026
2pm EST Feb 10, 2026-6pm EST Feb 16, 2026



