Currently: 80 °F. Overcast. (Weather station: Sikorsky Memorial Airport, USA). See more current weatherPast Weather in Port Jefferson — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
61
64
67
70
73
76
79
82
85
88
91
94
Sun, Jun 29
Lo:88
12 pm
Hi:90
6
Lo:75
6 pm
Hi:90
5
Mon, Jun 30
Lo:70
12 am
Hi:75
6
Lo:72
6 am
Hi:79
7
Lo:79
12 pm
Hi:82
7
Lo:75
6 pm
Hi:81
7
Tue, Jul 1
Lo:73
12 am
Hi:77
7
Lo:73
6 am
Hi:81
9
Lo:82
12 pm
Hi:90
11
Lo:73
6 pm
Hi:79
7
Wed, Jul 2
Lo:72
12 am
Hi:73
3
Lo:73
6 am
Hi:77
7
Lo:79
12 pm
Hi:81
11
Lo:73
6 pm
Hi:79
7
Thu, Jul 3
Lo:70
12 am
Hi:73
2
Lo:72
6 am
Hi:82
7
Lo:84
12 pm
Hi:90
13
Lo:66
6 pm
Hi:72
9
Fri, Jul 4
Lo:64
12 am
Hi:66
4
Lo:64
6 am
Hi:79
9
Lo:81
12 pm
Hi:82
11
Lo:70
6 pm
Hi:81
4
Sat, Jul 5
Lo:63
12 am
Hi:68
4
Lo:63
6 am
Hi:77
3
Lo:77
12 pm
Hi:82
9
Lo:73
6 pm
Hi:81
7
Sun, Jul 6
Lo:73
12 am
Hi:73
9
Lo:73
6 am
Hi:82
11
Lo:82
12 pm
Hi:88
12
Lo:75
6 pm
Hi:81
8
Mon, Jul 7
Lo:73
12 am
Hi:75
4
Lo:75
6 am
Hi:79
6
Lo:79
12 pm
Hi:86
9
Lo:77
6 pm
Hi:81
7
Tue, Jul 8
Lo:75
12 am
Hi:79
2
Lo:75
6 am
Hi:84
9
Lo:81
12 pm
Hi:93
11
Lo:75
6 pm
Hi:82
8
Wed, Jul 9
Lo:73
12 am
Hi:75
4
Lo:75
6 am
Hi:84
7
Lo:84
12 pm
Hi:88
11
Lo:75
6 pm
Hi:84
7
Thu, Jul 10
Lo:72
12 am
Hi:73
6
Lo:73
6 am
Hi:75
4
Lo:75
12 pm
Hi:79
8
Lo:73
6 pm
Hi:77
4
Fri, Jul 11
Lo:72
12 am
Hi:73
7
Lo:70
6 am
Hi:75
7
Lo:77
12 pm
Hi:79
8
Lo:73
6 pm
Hi:77
7
Sat, Jul 12
Lo:72
12 am
Hi:73
4
Lo:72
6 am
Hi:79
7
Lo:77
12 pm
Hi:79
12
Lo:72
6 pm
Hi:75
7
Sun, Jul 13
Lo:68
12 am
Hi:72
5
Lo:70
6 am
Hi:75
4
Lo:75
12 pm
Hi:79
9
Lo:73
6 pm
Hi:77
8
Mon, Jul 14
Lo:73
12 am
Hi:73
3
Lo:73
6 am
Hi:81
7
Lo:81
12 pm
Hi:82
11
Sunday, June 29, 2025, 12:00 pm — 6:00 pm
90 / 88 °F
Sunny.
Humidity: 41%
Barometer: 29.92 "Hg
SW
Wind: 5.593 mph
Port Jefferson Temperature Yesterday
Maximum temperature yesterday: 79 °F (at 3:52 pm)
Minimum temperature yesterday: 68 °F (at 3:52 am)
Average temperature yesterday: 74 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 94 °F (Jul 8, 2:52 pm) | 97% (Jul 1, 4:10 am) | 30.18 "Hg (Jul 1, 4:10 am) |
| Low | 63 °F (Jul 5, 5:52 am) | 31% (Jul 4, 4:52 pm) | 29.75 "Hg (Jul 1, 4:52 pm) |
| Average | 76 °F | 78% | 29.98 "Hg |
| * Reported Jun 29 4:52 pm — Jul 14 4:52 pm, Port Jefferson. Weather by CustomWeather, © 2025 | |||
Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records
Port Jefferson Weather History for the Previous 24 Hours
Scroll right to see more
| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 4:52 pm Mon, Jul 14 | | 80 °F | Overcast. | 9 mph | ↑ | 76% | 30.01 "Hg | 10 mi |
| 3:52 pm |  | 82 °F | Passing clouds. | 12 mph | ↑ | 74% | 30.01 "Hg | 10 mi |
| 2:52 pm | | 83 °F | Passing clouds. | 13 mph | ↑ | 74% | 30.02 "Hg | 10 mi |
| 1:52 pm | | 82 °F | Passing clouds. | 12 mph | ↑ | 77% | 30.04 "Hg | 10 mi |
| 12:52 pm | | 81 °F | Passing clouds. | 8 mph | ↑ | 77% | 30.05 "Hg | 10 mi |
| 11:52 am |  | 81 °F | Sunny. | 9 mph | ↑ | 77% | 30.06 "Hg | 10 mi |
| 10:52 am |  | 80 °F | More clouds than sun. | 6 mph | ↑ | 79% | 30.06 "Hg | 10 mi |
| 10:07 am | | 80 °F | Partly sunny. | 7 mph | ↑ | 76% | 30.07 "Hg | 10 mi |
| 8:59 am | | 77 °F | Partly sunny. | 6 mph | ↑ | 85% | 30.07 "Hg | 10 mi |
| 7:52 am | | 74 °F | Overcast. | 8 mph | ↑ | 91% | 30.06 "Hg | 10 mi |
| 7:06 am | | 74 °F | Overcast. | 7 mph | ↑ | 91% | 30.06 "Hg | 10 mi |
| 5:52 am | | 73 °F | Mostly cloudy. | 5 mph | ↑ | 94% | 30.06 "Hg | 10 mi |
| 5:39 am | | 73 °F | Partly sunny. | 5 mph | ↑ | 94% | 30.06 "Hg | 10 mi |
| 4:52 am |  | 74 °F | Mostly cloudy. | 3 mph | ↑ | 91% | 30.06 "Hg | 10 mi |
| 4:24 am |  | 74 °F | Passing clouds. | No wind | ↑ | 91% | 30.07 "Hg | 10 mi |
| 3:52 am | | 74 °F | Overcast. | 8 mph | ↑ | 88% | 30.05 "Hg | 10 mi |
| 2:52 am | | 74 °F | Overcast. | 3 mph | ↑ | 88% | 30.06 "Hg | 10 mi |
| 1:52 am | | 74 °F | Overcast. | 3 mph | ↑ | 88% | 30.08 "Hg | 10 mi |
| 1:28 am | | 74 °F | Mostly cloudy. | 3 mph | ↑ | 88% | 30.08 "Hg | 10 mi |
| 1:01 am | | 74 °F | Mostly cloudy. | No wind | ↑ | 88% | 30.08 "Hg | 10 mi |
| 12:44 am | | 74 °F | Mostly cloudy. | No wind | ↑ | 88% | 30.08 "Hg | 10 mi |
| 11:52 pm Sun, Jul 13 | | 73 °F | Passing clouds. | 5 mph | ↑ | 90% | 30.09 "Hg | 10 mi |
| 10:52 pm |  | 74 °F | Clear. | 8 mph | ↑ | 88% | 30.09 "Hg | 10 mi |
| 9:52 pm | | 75 °F | Overcast. | 7 mph | ↑ | 85% | 30.09 "Hg | 10 mi |
| 8:52 pm | | 76 °F | Overcast. | 7 mph | ↑ | 82% | 30.08 "Hg | 10 mi |
| 7:52 pm | | 77 °F | Overcast. | 9 mph | ↑ | 79% | 30.06 "Hg | 10 mi |
| 7:44 pm | | 77 °F | Overcast. | 9 mph | ↑ | 79% | 30.06 "Hg | 10 mi |
| 7:36 pm | | 77 °F | Partly sunny. | 8 mph | ↑ | 79% | 30.06 "Hg | 10 mi |
| 7:07 pm | | 77 °F | Overcast. | 9 mph | ↑ | 79% | 30.05 "Hg | 10 mi |
| Weather by CustomWeather, © 2025 | ||||||||