Nearby Harbors
40.9500’ N, 73.0767’ W

Port Jefferson, NY

78°
H -°
L 63°
SW
10mph
High tide
9:47 pm
Photo Credits

Port Jefferson, NY Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Mon
Aug 24 		Showers Early
Close Hourly 		-º / 63º 35% W 12 mph 70%
6pm Partly Cloudy 78º 24% SW 10 mph 55%
7pm Few Showers 76º 31% SW 7 mph 62%
8pm Partly Cloudy 74º 24% SW 7 mph 66%
9pm Partly Cloudy 72º 24% WSW 7 mph 72%
10pm Clear 72º 1% W 7 mph 69%
11pm Clear 71º 1% W 7 mph 69%
Tue
Aug 25 		Mostly Sunny
View Hourly 		77º / 64º 5% W 12 mph 63%
12am Clear 70º 1% W 7 mph 69%
1am Clear 68º 4% WNW 6 mph 73%
2am Clear 67º 3% WNW 6 mph 73%
3am Mostly Clear 67º 3% WNW 6 mph 74%
4am Mostly Clear 65º 4% WNW 6 mph 77%
5am Clear 64º 4% WNW 6 mph 80%
6am Clear 64º 5% WNW 6 mph 81%
7am Sunny 65º 4% WNW 6 mph 79%
8am Sunny 67º 3% WNW 8 mph 73%
9am Sunny 69º 2% WNW 9 mph 68%
10am Sunny 71º 2% WNW 9 mph 66%
11am Sunny 72º 1% WNW 10 mph 63%
12pm Sunny 74º 1% W 9 mph 60%
1pm Mostly Sunny 75º 0% WNW 10 mph 57%
2pm Mostly Sunny 76º 3% W 11 mph 56%
3pm Partly Cloudy 76º 5% W 12 mph 57%
4pm Partly Cloudy 76º 1% W 11 mph 58%
5pm Partly Cloudy 76º 1% W 10 mph 57%
6pm Partly Cloudy 76º 1% W 10 mph 59%
7pm Partly Cloudy 75º 1% W 8 mph 61%
8pm Mostly Clear 73º 1% W 7 mph 66%
9pm Clear 72º 1% WNW 7 mph 68%
10pm Clear 71º 2% WNW 6 mph 71%
11pm Clear 71º 3% WNW 6 mph 74%
Wed
Aug 26 		Mostly Sunny
View Hourly 		79º / 69º 5% WNW 8 mph 64%
12am Clear 69º 4% WNW 6 mph 77%
1am Clear 68º 5% NW 5 mph 80%
2am Clear 68º 5% NW 5 mph 82%
3am Clear 67º 5% NW 6 mph 83%
4am Clear 66º 5% NNW 5 mph 84%
5am Clear 65º 6% NNW 5 mph 86%
6am Clear 65º 6% NNW 5 mph 86%
7am Sunny 66º 5% NNW 5 mph 84%
8am Sunny 68º 4% NNW 6 mph 79%
9am Mostly Sunny 70º 3% NNW 6 mph 73%
10am Sunny 72º 2% NNW 6 mph 69%
11am Mostly Sunny 73º 1% NNW 5 mph 65%
12pm Partly Cloudy 75º 1% NW 5 mph 61%
1pm Sunny 76º 0% WNW 5 mph 57%
2pm Partly Cloudy 77º 0% WSW 5 mph 56%
3pm Mostly Sunny 77º 0% SSW 6 mph 55%
4pm Partly Cloudy 78º 0% SSW 5 mph 55%
5pm Mostly Cloudy 78º 0% SSW 6 mph 57%
Thu
Aug 27 		PM Thunderstorms 80º / 69º 47% S 15 mph 74%
Fri
Aug 28 		Scattered Thunderstorms 80º / 65º 39% WSW 7 mph 79%
Sat
Aug 29 		Partly Cloudy 77º / 64º 8% NNE 8 mph 69%
Sun
Aug 30 		Mostly Sunny 79º / 69º 18% SSE 10 mph 66%
Mon
Aug 31 		Partly Cloudy 83º / 70º 24% WSW 11 mph 71%

Weather Radar for Port Jefferson, NY See Radar

See Radar Map

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Port Jefferson, NY

Late Afternoon
High : 76ºF
SW wind around 10 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Tonight
Low : 68ºF
Variable winds less than 5 kt becoming W 5 to 7 kt in the evening. A slight chance of showers and thunderstorms before 8pm. Seas 1 ft or less.
Tuesday
High : 78ºF
W wind 8 to 10 kt. A slight chance of showers and thunderstorms after 5pm. Seas 1 ft or less.
Tuesday Night
Low : 68ºF
W wind 6 to 8 kt becoming NNW after midnight. A slight chance of showers and thunderstorms before 8pm. Seas 1 ft or less.
Wednesday
High : 78ºF
NNW wind 5 to 7 kt becoming WSW in the afternoon. Sunny. Seas 1 ft or less.
Wednesday Night
Low : 71ºF
S wind around 8 kt. Partly cloudy. Seas 1 ft or less.
Thursday
High : 78ºF
S wind 7 to 12 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.
Thursday Night
Low : 70ºF
S wind 5 to 9 kt. Showers likely and possibly a thunderstorm. Seas 1 ft or less.
Friday
High : 80ºF
Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.

NOAA Buoy Data Near Port Jefferson, NY See Map

Loading Map...
Loading Buoy Data...

    Wind Speed Forecast for Port Jefferson, NY

    MondayTuesdayWednesday
    Wind Speed (MPH) 107669111065565
    10pm2am6am10am2pm6pm10pm2am6am10am2pm6pm
    MPH 107669111065565
    DIR SWWWNWWNWWNWWWWNWNWNNWNNWWSW

    Current Weather Conditions In Port Jefferson, NY

    As Of: 18 minutes ago

    • 78ºF
    • 78ºF
    • 10mph
    • 0º (SW)
    • 10mph
    • Partly Cloudy
    • 10mi
    • 29.91"
    • 55%
    • 0ºF

    The weather right now in Port Jefferson, NY is Partly Cloudy. The current temperature is 78°F, and the expected high and low for today, Monday, August 24, 2026, are -° high temperature and 63°F low temperature. The wind is currently blowing at 10 miles per hour, and coming from the Southwest. The wind is gusting to 10 mph. With the wind and the atmosphere the temperature feels like 78° Fahrenheit. Expected precipitation is 24 percent, with current humidity at 55 percent, and air pressure at 29.91 in. Visibility is 10 nautical miles. There are no current weather alert(s).

    Your Privacy Choices