Currently: 61 °F. Partly sunny. (Weather station: Philadelphia International Airport, USA). See more current weatherSeptember 2018 Weather in Philadelphia — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
54
58
62
66
70
74
78
82
86
90
94
Sat, Sep 1
Lo:70
12 am
Hi:70
8
Lo:70
6 am
Hi:75
9
Lo:75
12 pm
Hi:79
8
Lo:70
6 pm
Hi:75
7
Sun, Sep 2
Lo:70
12 am
Hi:72
5
Lo:70
6 am
Hi:79
4
Lo:79
12 pm
Hi:88
6
Lo:75
6 pm
Hi:81
4
Mon, Sep 3
Lo:73
12 am
Hi:75
1
Lo:73
6 am
Hi:84
2
Lo:88
12 pm
Hi:91
7
Lo:79
6 pm
Hi:88
7
Tue, Sep 4
Lo:75
12 am
Hi:79
2
Lo:75
6 am
Hi:90
4
Lo:91
12 pm
Hi:93
7
Lo:79
6 pm
Hi:90
6
Wed, Sep 5
Lo:75
12 am
Hi:79
1
Lo:75
6 am
Hi:90
4
Lo:91
12 pm
Hi:95
6
Lo:79
6 pm
Hi:88
7
Thu, Sep 6
Lo:79
12 am
Hi:81
6
Lo:79
6 am
Hi:90
6
Lo:91
12 pm
Hi:93
11
Lo:79
6 pm
Hi:90
9
Fri, Sep 7
Lo:73
12 am
Hi:79
6
Lo:73
6 am
Hi:84
8
Lo:81
12 pm
Hi:86
7
Lo:72
6 pm
Hi:81
11
Sat, Sep 8
Lo:68
12 am
Hi:72
8
Lo:66
6 am
Hi:68
14
Lo:66
12 pm
Hi:68
14
Lo:63
6 pm
Hi:64
15
Sun, Sep 9
Lo:55
12 am
Hi:63
14
Lo:55
6 am
Hi:59
14
Lo:59
12 pm
Hi:61
13
Lo:57
6 pm
Hi:61
14
Mon, Sep 10
Lo:55
12 am
Hi:61
14
Lo:57
6 am
Hi:66
11
Lo:66
12 pm
Hi:70
15
Lo:64
6 pm
Hi:66
9
Tue, Sep 11
Lo:64
12 am
Hi:64
6
Lo:64
6 am
Hi:72
5
Lo:73
12 pm
Hi:75
6
Lo:73
6 pm
Hi:75
4
Wed, Sep 12
Lo:72
12 am
Hi:72
4
Lo:72
6 am
Hi:79
5
Lo:79
12 pm
Hi:84
4
Lo:75
6 pm
Hi:77
7
Thu, Sep 13
Lo:73
12 am
Hi:75
5
Lo:73
6 am
Hi:75
9
Lo:75
12 pm
Hi:79
10
Lo:70
6 pm
Hi:73
10
Fri, Sep 14
Lo:68
12 am
Hi:70
9
Lo:68
6 am
Hi:73
10
Lo:73
12 pm
Hi:75
11
Lo:70
6 pm
Hi:73
9
Sat, Sep 15
Lo:66
12 am
Hi:70
6
Lo:68
6 am
Hi:79
7
Lo:75
12 pm
Hi:79
7
Lo:66
6 pm
Hi:77
3
Sun, Sep 16
Lo:64
12 am
Hi:66
4
Lo:66
6 am
Hi:81
6
Lo:81
12 pm
Hi:84
7
Lo:66
6 pm
Hi:75
2
Mon, Sep 17
Lo:66
12 am
Hi:66
3
Lo:68
6 am
Hi:79
6
Lo:77
12 pm
Hi:81
9
Lo:75
6 pm
Hi:77
9
Tue, Sep 18
Lo:73
12 am
Hi:77
12
Lo:73
6 am
Hi:82
10
Lo:75
12 pm
Hi:79
10
Lo:70
6 pm
Hi:75
6
Wed, Sep 19
Lo:68
12 am
Hi:72
1
Lo:70
6 am
Hi:81
11
Lo:82
12 pm
Hi:84
10
Lo:70
6 pm
Hi:81
5
Thu, Sep 20
Lo:68
12 am
Hi:70
4
Lo:66
6 am
Hi:73
7
Lo:72
12 pm
Hi:75
7
Lo:66
6 pm
Hi:72
7
Fri, Sep 21
Lo:66
12 am
Hi:66
1
Lo:66
6 am
Hi:73
7
Lo:75
12 pm
Hi:75
13
Lo:72
6 pm
Hi:73
9
Sat, Sep 22
Lo:72
12 am
Hi:73
11
Lo:72
6 am
Hi:73
12
Lo:66
12 pm
Hi:75
14
Lo:63
6 pm
Hi:66
7
Sun, Sep 23
Lo:63
12 am
Hi:63
5
Lo:59
6 am
Hi:61
7
Lo:61
12 pm
Hi:63
7
Lo:61
6 pm
Hi:63
7
Mon, Sep 24
Lo:61
12 am
Hi:63
7
Lo:61
6 am
Hi:64
10
Lo:64
12 pm
Hi:66
15
Lo:63
6 pm
Hi:64
14
Tue, Sep 25
Lo:63
12 am
Hi:64
14
Lo:64
6 am
Hi:77
9
Lo:73
12 pm
Hi:81
7
Lo:72
6 pm
Hi:75
2
Wed, Sep 26
Lo:72
12 am
Hi:73
2
Lo:72
6 am
Hi:79
6
Lo:81
12 pm
Hi:84
11
Lo:72
6 pm
Hi:81
8
Thu, Sep 27
Lo:63
12 am
Hi:72
11
Lo:63
6 am
Hi:70
12
Lo:70
12 pm
Hi:72
6
Lo:61
6 pm
Hi:66
9
Fri, Sep 28
Lo:63
12 am
Hi:66
7
Lo:61
6 am
Hi:64
11
Lo:63
12 pm
Hi:68
7
Lo:59
6 pm
Hi:66
2
Sat, Sep 29
Lo:57
12 am
Hi:59
1
Lo:57
6 am
Hi:73
3
Lo:73
12 pm
Hi:77
10
Lo:63
6 pm
Hi:72
7
Sun, Sep 30
Lo:55
12 am
Hi:63
3
Lo:57
6 am
Hi:70
4
Lo:72
12 pm
Hi:73
6
Lo:63
6 pm
Hi:72
3
Saturday, September 1, 2018, 12:00 am — 6:00 am
70 / 70 °F
Mostly cloudy.
Humidity: 88%
Barometer: 30.25 "Hg
ENE
Wind: 8.078 mph
High & Low Weather Summary for September 2018
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 95 °F (Sep 5, 2:54 pm) | 100% (Sep 3, 4:54 am) | 30.43 "Hg (Sep 3, 4:54 am) |
| Low | 55 °F (Sep 10, 4:06 am) | 41% (Sep 5, 2:54 pm) | 29.74 "Hg (Sep 18, 2:54 pm) |
| Average | 71 °F | 84% | 30.14 "Hg |
| * Reported Sep 1 12:54 am — Sep 30 11:54 pm, Philadelphia. 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
Philadelphia Weather History for September 1, 2018
Scroll right to see more
| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 12:54 am Sat, Sep 1 |  | 69 °F | Overcast. | 8 mph | ↑ | 90% | 30.26 "Hg | 10 mi |
| 1:54 am |  | 69 °F | Passing clouds. | 9 mph | ↑ | 90% | 30.25 "Hg | 10 mi |
| 2:54 am | | 70 °F | Mostly cloudy. | 7 mph | ↑ | 87% | 30.25 "Hg | 10 mi |
| 3:27 am | | 70 °F | Overcast. | 7 mph | ↑ | 87% | 30.26 "Hg | 10 mi |
| 3:54 am | | 70 °F | Overcast. | 7 mph | ↑ | 87% | 30.26 "Hg | 10 mi |
| 4:54 am | | 70 °F | Mostly cloudy. | 10 mph | ↑ | 87% | 30.25 "Hg | 10 mi |
| 5:54 am | | 70 °F | Mostly cloudy. | 8 mph | ↑ | 87% | 30.25 "Hg | 10 mi |
| 6:32 am | | 70 °F | Mostly cloudy. | 8 mph | ↑ | 87% | 30.27 "Hg | 10 mi |
| 6:54 am | | 70 °F | Mostly cloudy. | 7 mph | ↑ | 87% | 30.27 "Hg | 10 mi |
| 8:02 am |  | 69 °F | Light rain. Fog. | 8 mph | ↑ | 93% | 30.29 "Hg | 6 mi |
| 8:14 am | | 69 °F | Light rain. Mostly cloudy. | 9 mph | ↑ | 93% | 30.29 "Hg | 7 mi |
| 8:54 am | | 69 °F | More clouds than sun. | 10 mph | ↑ | 93% | 30.28 "Hg | 10 mi |
| 9:30 am | | 71 °F | Mostly cloudy. | 9 mph | ↑ | 87% | 30.29 "Hg | 10 mi |
| 9:54 am | | 72 °F | Mostly cloudy. | 9 mph | ↑ | 87% | 30.29 "Hg | 10 mi |
| 10:11 am | | 72 °F | Broken clouds. | 12 mph | ↑ | 84% | 30.30 "Hg | 10 mi |
| 10:54 am | | 73 °F | Mostly cloudy. | 10 mph | ↑ | 84% | 30.29 "Hg | 10 mi |
| 11:54 am | | 76 °F | Mostly cloudy. | 10 mph | ↑ | 74% | 30.29 "Hg | 10 mi |
| 12:54 pm | | 76 °F | Mostly cloudy. | 8 mph | ↑ | 74% | 30.29 "Hg | 10 mi |
| 1:54 pm |  | 78 °F | Overcast. | 8 mph | ↑ | 71% | 30.28 "Hg | 10 mi |
| 2:54 pm | | 77 °F | Overcast. | 8 mph | ↑ | 71% | 30.27 "Hg | 10 mi |
| 3:54 pm | | 77 °F | Overcast. | 9 mph | ↑ | 71% | 30.25 "Hg | 10 mi |
| 4:54 pm | | 78 °F | Overcast. | 8 mph | ↑ | 69% | 30.24 "Hg | 10 mi |
| 5:23 pm |  | 78 °F | Scattered clouds. | 8 mph | ↑ | 69% | 30.24 "Hg | 10 mi |
| 5:54 pm | | 78 °F | Scattered clouds. | 7 mph | ↑ | 66% | 30.23 "Hg | 10 mi |
| 6:54 pm | | 76 °F | Scattered clouds. | 9 mph | ↑ | 74% | 30.23 "Hg | 10 mi |
| 7:54 pm |  | 73 °F | Partly cloudy. | 6 mph | ↑ | 79% | 30.24 "Hg | 10 mi |
| 8:54 pm | | 72 °F | Partly cloudy. | 7 mph | ↑ | 81% | 30.27 "Hg | 10 mi |
| 9:54 pm | | 72 °F | Passing clouds. | 7 mph | ↑ | 78% | 30.28 "Hg | 10 mi |
| 10:54 pm | | 71 °F | Partly cloudy. | 7 mph | ↑ | 81% | 30.27 "Hg | 10 mi |
| 11:54 pm | | 70 °F | Passing clouds. | 7 mph | ↑ | 87% | 30.26 "Hg | 10 mi |
| Weather by CustomWeather, © 2025 | ||||||||