Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
50°F
10°C
| Humidity | 46% |
| Wind Speed | W 15 mph |
| Barometer | 29.82 in (1009.8 mb) |
| Dewpoint | 30°F (-1°C) |
| Visibility | 10.00 mi |
| Wind Chill | 45°F (7°C) |
| Last update | 1 Nov 7:56 am EDT |
Extended Forecast for
Port Jefferson NY
Today
High: 57 °F
Sunny
Tonight
Low: 42 °F
Partly Cloudy
Sunday
High: 57 °F
Sunny
Sunday Night
Low: 44 °F
Partly Cloudy
Monday
High: 59 °F
Chance Rain
Monday Night
Low: 47 °F
Chance Rain
Tuesday
High: 59 °F
Sunny
Tuesday Night
Low: 44 °F
Mostly Clear
Wednesday
High: 59 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 57. West wind around 17 mph, with gusts as high as 30 mph.
Tonight
Partly cloudy, with a low around 42. Northwest wind 6 to 10 mph.
Sunday
Sunny, with a high near 57. West wind around 7 mph.
Sunday Night
Partly cloudy, with a low around 44. Southwest wind around 5 mph becoming calm in the evening.
Monday
A 40 percent chance of rain, mainly after 2pm. Partly sunny, with a high near 59. Light south wind becoming southwest 5 to 10 mph in the morning.
Monday Night
A 50 percent chance of rain before 2am. Mostly cloudy, with a low around 47.
Tuesday
Sunny, with a high near 59.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Mostly sunny, with a high near 59.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 56.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 56.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
6:01 am EDT Nov 1, 2025
9am EDT Nov 1, 2025-6pm EST Nov 7, 2025
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