Home » United States » Port Jefferson

Weather forecast Port Jefferson on 7 days | United States

On our website, you will find a detailed weather forecast for the week in Port Jefferson and other parts of the world. Would you like to know the detailed weather forecast in Port Jefferson for today? The air temperature will range from +30°F. A northeast wind is expected at a speed of 32.8 km/h. The atmospheric pressure will reach 766 mm Hg, humidity will be at 42%, and the cloudiness will be snow. Looking for the detailed weather forecast for tomorrow in Port Jefferson? The maximum temperature will be +30°F, while the minimum at night will be +32°F A west wind will prevail at a speed of 32.8 km/h. The humidity level will be 42%. The atmospheric pressure will reach 766 mm Hg, and the cloudiness will be snow. Need a detailed weather forecast for the weekend in Port Jefferson? The minimum temperature on Saturday will be +32°F, and the maximum will be +30°F A northwest wind is expected at a speed of 32.8
Saturday
2025-03-29
30°F
snow
Day
+30°F
Night
+32°F
Wind
9.1 m/s
Pressure
766 mm
Humidity
42 %
Cloudiness
46%
Sunday
2025-03-30
34°F
snow
Day
+34°F
Night
+37°F
Wind
8.49 m/s
Pressure
760 mm
Humidity
85 %
Cloudiness
100%
Monday
2025-03-31
37°F
rain
Day
+37°F
Night
+39°F
Wind
2.53 m/s
Pressure
766 mm
Humidity
96 %
Cloudiness
100%
Tuesday
2025-04-01
37°F
rain
Day
+37°F
Night
+39°F
Wind
5.22 m/s
Pressure
764 mm
Humidity
97 %
Cloudiness
100%
Wednesday
2025-04-02
39°F
rain
Day
+39°F
Night
+39°F
Wind
5.67 m/s
Pressure
764 mm
Humidity
92 %
Cloudiness
100%
Thursday
2025-04-03
36°F
snow
Day
+36°F
Night
+37°F
Wind
12.63 m/s
Pressure
760 mm
Humidity
89 %
Cloudiness
100%
Friday
2025-04-04
37°F
cloudy
Day
+37°F
Night
+39°F
Wind
9.08 m/s
Pressure
763 mm
Humidity
60 %
Cloudiness
19%
+36°F 
763 mm 
100 % 
+61°F 
758 mm 
100 % 
+46°F 
757 mm 
100 % 
+36°F 
762 mm 
100 % 
+77°F 
755 mm 
100 % 
+39°F 
761 mm 
100 % 
+55°F 
763 mm 
78 % 
+84°F 
757 mm 
70 % 
+88°F 
753 mm 
33 % 
+66°F 
760 mm 
100 % 
+77°F 
761 mm 
100 % 
+73°F 
764 mm 
83 % 
+72°F 
756 mm 
99 % 
+82°F 
764 mm 
77 % 
+54°F 
764 mm 
95 % 
+90°F 
752 mm 
99 % 
+70°F 
756 mm 
100 % 
+79°F 
760 mm 
100 % 
+46°F 
771 mm 
100 % 
+63°F 
753 mm 
100 % 
+81°F 
757 mm 
31 % 
+66°F 
757 mm 
100 % 
+68°F 
757 mm 
100 % 
+41°F 
770 mm 
100 %