Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
58°F
14°C
| Humidity | 81% |
| Wind Speed | E 12 mph |
| Barometer | 30.27 in (1025.0 mb) |
| Dewpoint | 52°F (11°C) |
| Visibility | 10.00 mi |
| Last update | 4 Oct 8:56 am EDT |
Extended Forecast for
Port Jefferson Station NY
Today
High: 62 °F
Mostly Cloudy
then Chance
ShowersTonight
Low: 56 °F
Chance
ShowersMonday
High: 66 °F
Becoming
SunnyMonday Night
Low: 48 °F
Clear
Tuesday
High: 60 °F
Sunny
Tuesday Night
Low: 50 °F
Clear
Wednesday
High: 64 °F
Sunny
Wednesday Night
Low: 56 °F
Mostly Clear
Thursday
High: 69 °F
Sunny
Detailed Forecast
Today
A 50 percent chance of showers after 2pm. Mostly cloudy, with a high near 62. East wind around 11 mph.
Tonight
A 30 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 56. Northeast wind 5 to 8 mph becoming northwest after midnight.
Monday
Mostly cloudy through mid morning, then gradual clearing, with a high near 66. West wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon.
Monday Night
Clear, with a low around 48. Northwest wind 14 to 16 mph.
Tuesday
Sunny, with a high near 60. West wind around 11 mph.
Tuesday Night
Clear, with a low around 50.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 69.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 64.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Port Jefferson Station NY
40.93°N 73.06°W (Elev. 161 ft)
40.93°N 73.06°W (Elev. 161 ft)
7:38 am EDT Oct 4, 2026
9am EDT Oct 4, 2026-6pm EDT Oct 10, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
