Port Jefferson, NY Weather Forecast and Current Conditions

Day	Sky	High / Low	Precip	Wind	Humidity
Sat Oct 31	Partly Cloudy	-º / 41º	2%	N 6 mph	61%
Sun Nov 1	Partly Cloudy View Hourly	60º / 45º	2%	WNW 8 mph	53%
3am	Partly Cloudy	48º	1%	N 6 mph	59%
4am	Partly Cloudy	46º	1%	NNE 5 mph	62%
5am	Partly Cloudy	45º	2%	NNE 5 mph	64%
6am	Partly Cloudy	42º	2%	N 5 mph	75%
7am	Partly Cloudy	43º	2%	N 4 mph	74%
8am	Partly Cloudy	47º	1%	N 4 mph	69%
9am	Sunny	50º	0%	NNW 4 mph	60%
10am	Sunny	52º	0%	NW 6 mph	52%
11am	Sunny	54º	0%	NW 6 mph	48%
12pm	Sunny	56º	0%	WNW 7 mph	46%
1pm	Sunny	57º	0%	W 8 mph	43%
2pm	Sunny	58º	0%	W 8 mph	42%
3pm	Sunny	58º	0%	WSW 7 mph	42%
4pm	Sunny	57º	0%	WSW 6 mph	45%
5pm	Clear	55º	0%	WSW 5 mph	52%
6pm	Clear	52º	0%	SW 3 mph	60%
7pm	Clear	50º	1%	SW 3 mph	64%
8pm	Clear	49º	1%	SW 4 mph	65%
9pm	Clear	49º	1%	SW 4 mph	68%
10pm	Clear	48º	2%	SW 4 mph	72%
11pm	Mostly Clear	48º	3%	SW 4 mph	74%
Mon Nov 2	Partly Cloudy View Hourly	67º / 48º	2%	SW 11 mph	51%
12am	Mostly Clear	47º	3%	WSW 4 mph	76%
1am	Mostly Clear	47º	3%	WSW 5 mph	77%
2am	Clear	47º	3%	WSW 5 mph	77%
3am	Clear	46º	3%	WSW 5 mph	76%
4am	Mostly Clear	46º	3%	WSW 5 mph	77%
5am	Partly Cloudy	46º	3%	WSW 5 mph	78%
6am	Partly Cloudy	46º	3%	WSW 5 mph	78%
7am	Mostly Cloudy	48º	2%	WSW 5 mph	75%
8am	Mostly Cloudy	51º	1%	WSW 6 mph	68%
9am	Mostly Cloudy	56º	0%	WSW 8 mph	59%
10am	Mostly Cloudy	59º	0%	WSW 9 mph	49%
11am	Cloudy	62º	0%	WSW 10 mph	44%
12pm	Partly Cloudy	63º	0%	WSW 11 mph	41%
1pm	Partly Cloudy	65º	0%	WSW 11 mph	39%
2pm	Mostly Cloudy	65º	0%	SW 10 mph	39%
3pm	Partly Cloudy	64º	0%	SW 10 mph	41%
4pm	Partly Cloudy	63º	0%	SW 9 mph	46%
5pm	Partly Cloudy	60º	0%	SSW 8 mph	54%
6pm	Mostly Clear	57º	0%	SSW 6 mph	61%
7pm	Mostly Clear	55º	1%	SSW 7 mph	65%
8pm	Partly Cloudy	55º	1%	SW 6 mph	67%
9pm	Partly Cloudy	54º	1%	SW 5 mph	69%
10pm	Partly Cloudy	54º	1%	SW 5 mph	69%
11pm	Partly Cloudy	53º	1%	SW 5 mph	72%
Tue Nov 3	Partly Cloudy View Hourly	68º / 51º	3%	SW 9 mph	60%
12am	Partly Cloudy	52º	2%	SW 5 mph	74%
1am	Partly Cloudy	51º	2%	SW 5 mph	76%
2am	Partly Cloudy	51º	1%	SW 5 mph	77%
Wed Nov 4	Mostly Sunny	70º / 57º	8%	SSW 9 mph	74%
Thu Nov 5	PM Showers	69º / 59º	35%	S 13 mph	82%
Fri Nov 6	Rain	66º / 54º	69%	SSE 10 mph	83%
Sat Nov 7	Showers	64º / 47º	52%	N 11 mph	77%

Buoy Data
For Port Jefferson, NY
Wind Forecast
In Port Jefferson, NY
Radar
In Port Jefferson, NY
Marine Forecast
In Port Jefferson, NY

NOAA Weather Marine Forecast for Port Jefferson, NY

Sunday

High : 59ºF
N wind around 6 kt becoming variable and less than 5 kt. Partly sunny, then gradually becoming sunny. Seas 1 ft or less.

Sunday Night

Low : 52ºF
Variable winds less than 5 kt becoming WSW 5 to 7 kt in the evening. Mostly clear. Seas 1 ft or less.

Monday

High : 64ºF
WSW wind 7 to 9 kt. Mostly sunny. Seas 1 ft or less.

Monday Night

Low : 54ºF
WSW wind 6 to 8 kt. Partly cloudy. Seas 1 ft or less.

Tuesday

High : 65ºF
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

Tuesday Night

Low : 57ºF
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Wednesday

High : 67ºF
Variable winds less than 5 kt becoming SSW 5 to 7 kt in the morning. Mostly sunny. Seas 1 ft or less.

Wednesday Night

Low : 58ºF
S wind around 6 kt. Partly cloudy. Seas 1 ft or less.

Thursday

High : 68ºF
S wind 6 to 8 kt. A chance of rain. Seas 1 ft or less.

Current Weather Conditions In Port Jefferson, NY

As Of: 9 minutes ago

Temperature: 48ºF
Feels Like: 45ºF

Wind Speed: 6mph
Direction: 0º (N)
Gusts: 6mph

Cloud Cover: Partly Cloudy
Visibility: 10mi

Pressure: 30.49"
Humidity: 59%
Dew Point: 0ºF

The weather right now in Port Jefferson, NY is Partly Cloudy. The current temperature is 48°F, and the expected high and low for today, Sunday, November 1, 2026, are -° high temperature and 41°F low temperature. The wind is currently blowing at 6 miles per hour, and coming from the North. The wind is gusting to 6 mph. With the wind and the atmosphere the temperature feels like 45° Fahrenheit. Expected precipitation is 1 percent, with current humidity at 59 percent, and air pressure at 30.49 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).