Currently: 72 °F. Passing clouds. (Weather station: Lambert-St. Louis International Airport, USA). See more current weatherSeptember 2017 Weather in St. Louis — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
50
54
58
62
66
70
74
78
82
86
90
94
98
Fri, Sep 1
Lo:63
12 am
Hi:66
12
Lo:63
6 am
Hi:72
11
Lo:72
12 pm
Hi:75
11
Lo:61
6 pm
Hi:72
7
Sat, Sep 2
Lo:54
12 am
Hi:61
2
Lo:54
6 am
Hi:72
2
Lo:73
12 pm
Hi:79
5
Lo:70
6 pm
Hi:79
2
Sun, Sep 3
Lo:68
12 am
Hi:70
6
Lo:66
6 am
Hi:82
5
Lo:82
12 pm
Hi:88
4
Lo:73
6 pm
Hi:82
4
Mon, Sep 4
Lo:72
12 am
Hi:73
3
Lo:72
6 am
Hi:88
14
Lo:91
12 pm
Hi:93
17
Lo:72
6 pm
Hi:90
9
Tue, Sep 5
Lo:63
12 am
Hi:68
7
Lo:63
6 am
Hi:73
12
Lo:72
12 pm
Hi:75
16
Lo:59
6 pm
Hi:70
6
Wed, Sep 6
Lo:52
12 am
Hi:57
6
Lo:52
6 am
Hi:66
11
Lo:66
12 pm
Hi:70
14
Lo:55
6 pm
Hi:64
3
Thu, Sep 7
Lo:52
12 am
Hi:55
2
Lo:52
6 am
Hi:73
6
Lo:73
12 pm
Hi:75
6
Lo:61
6 pm
Hi:72
1
Fri, Sep 8
Lo:55
12 am
Hi:61
0
Lo:54
6 am
Hi:79
2
Lo:79
12 pm
Hi:82
4
Lo:68
6 pm
Hi:75
7
Sat, Sep 9
Lo:61
12 am
Hi:68
4
Lo:63
6 am
Hi:81
3
Lo:81
12 pm
Hi:82
7
Lo:70
6 pm
Hi:77
7
Sun, Sep 10
Lo:61
12 am
Hi:68
8
Lo:61
6 am
Hi:73
10
Lo:75
12 pm
Hi:77
10
Lo:63
6 pm
Hi:72
4
Mon, Sep 11
Lo:54
12 am
Hi:63
2
Lo:54
6 am
Hi:73
4
Lo:75
12 pm
Hi:77
11
Lo:66
6 pm
Hi:75
9
Tue, Sep 12
Lo:61
12 am
Hi:64
9
Lo:59
6 am
Hi:73
11
Lo:73
12 pm
Hi:79
13
Lo:64
6 pm
Hi:73
7
Wed, Sep 13
Lo:63
12 am
Hi:66
7
Lo:64
6 am
Hi:68
4
Lo:72
12 pm
Hi:75
4
Lo:66
6 pm
Hi:73
1
Thu, Sep 14
Lo:61
12 am
Hi:64
1
Lo:61
6 am
Hi:82
2
Lo:84
12 pm
Hi:88
4
Lo:70
6 pm
Hi:82
8
Fri, Sep 15
Lo:64
12 am
Hi:72
4
Lo:66
6 am
Hi:88
9
Lo:88
12 pm
Hi:90
9
Lo:77
6 pm
Hi:86
11
Sat, Sep 16
Lo:66
12 am
Hi:75
8
Lo:70
6 am
Hi:86
7
Lo:88
12 pm
Hi:91
11
Lo:79
6 pm
Hi:88
9
Sun, Sep 17
Lo:73
12 am
Hi:79
7
Lo:75
6 am
Hi:81
6
Lo:75
12 pm
Hi:82
9
Lo:72
6 pm
Hi:75
6
Mon, Sep 18
Lo:66
12 am
Hi:72
4
Lo:66
6 am
Hi:82
4
Lo:81
12 pm
Hi:84
7
Lo:70
6 pm
Hi:81
4
Tue, Sep 19
Lo:66
12 am
Hi:70
1
Lo:66
6 am
Hi:82
2
Lo:84
12 pm
Hi:90
5
Lo:79
6 pm
Hi:84
9
Wed, Sep 20
Lo:73
12 am
Hi:79
7
Lo:73
6 am
Hi:90
10
Lo:91
12 pm
Hi:97
10
Lo:82
6 pm
Hi:91
11
Thu, Sep 21
Lo:75
12 am
Hi:82
6
Lo:75
6 am
Hi:84
5
Lo:84
12 pm
Hi:90
12
Lo:81
6 pm
Hi:88
10
Fri, Sep 22
Lo:72
12 am
Hi:79
6
Lo:72
6 am
Hi:91
6
Lo:91
12 pm
Hi:95
10
Lo:79
6 pm
Hi:90
4
Sat, Sep 23
Lo:72
12 am
Hi:75
2
Lo:70
6 am
Hi:90
4
Lo:90
12 pm
Hi:91
8
Lo:79
6 pm
Hi:84
7
Sun, Sep 24
Lo:70
12 am
Hi:79
6
Lo:70
6 am
Hi:88
6
Lo:88
12 pm
Hi:90
7
Lo:79
6 pm
Hi:84
6
Mon, Sep 25
Lo:70
12 am
Hi:77
2
Lo:70
6 am
Hi:88
6
Lo:88
12 pm
Hi:91
7
Lo:79
6 pm
Hi:88
9
Tue, Sep 26
Lo:73
12 am
Hi:77
3
Lo:73
6 am
Hi:88
7
Lo:88
12 pm
Hi:91
6
Lo:75
6 pm
Hi:84
9
Wed, Sep 27
Lo:66
12 am
Hi:73
10
Lo:64
6 am
Hi:70
11
Lo:70
12 pm
Hi:72
12
Lo:63
6 pm
Hi:70
9
Thu, Sep 28
Lo:55
12 am
Hi:63
7
Lo:55
6 am
Hi:66
7
Lo:72
12 pm
Hi:75
11
Lo:61
6 pm
Hi:70
5
Fri, Sep 29
Lo:54
12 am
Hi:61
2
Lo:54
6 am
Hi:75
4
Lo:79
12 pm
Hi:84
7
Lo:66
6 pm
Hi:75
9
Sat, Sep 30
Lo:54
12 am
Hi:63
9
Lo:54
6 am
Hi:68
9
Lo:70
12 pm
Hi:75
10
Lo:59
6 pm
Hi:68
7
Friday, September 1, 2017, 12:00 am — 6:00 am
66 / 63 °F
Partly cloudy.
Humidity: 87%
Barometer: 29.98 "Hg
NNE
Wind: 12.428 mph
High & Low Weather Summary for September 2017
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 97 °F (Sep 20, 3:51 pm) | 100% (Sep 14, 4:51 am) | 30.36 "Hg (Sep 14, 4:51 am) |
| Low | 51 °F (Sep 6, 5:51 am) | 25% (Sep 2, 2:51 pm) | 29.70 "Hg (Sep 13, 2:51 am) |
| Average | 73 °F | 62% | 30.02 "Hg |
| * Reported Sep 1 1:00 am — Sep 30 11:51 pm, St. Louis. 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
St. Louis Weather History for September 1, 2017
Scroll right to see more
| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 1:00 am Fri, Sep 1 |  | 66 °F | Passing clouds. | 16 mph | ↑ | 84% | 30.01 "Hg | 10 mi |
| 1:14 am |  | 66 °F | Partly cloudy. | 13 mph | ↑ | 84% | 30.00 "Hg | 10 mi |
| 1:51 am | | 65 °F | Partly cloudy. | 14 mph | ↑ | 87% | 29.96 "Hg | 10 mi |
| 2:21 am | | 65 °F | Passing clouds. | 9 mph | ↑ | 85% | 29.99 "Hg | 10 mi |
| 2:42 am | | 65 °F | Partly cloudy. | 14 mph | ↑ | 85% | 29.99 "Hg | 10 mi |
| 2:51 am | | 64 °F | Partly cloudy. | 12 mph | ↑ | 87% | 29.96 "Hg | 10 mi |
| 3:51 am | | 64 °F | Passing clouds. | 14 mph | ↑ | 87% | 29.96 "Hg | 10 mi |
| 4:51 am | | 63 °F | Passing clouds. | 13 mph | ↑ | 90% | 29.97 "Hg | 10 mi |
| 5:51 am | | 62 °F | Partly cloudy. | 10 mph | ↑ | 90% | 29.98 "Hg | 10 mi |
| 6:51 am |  | 63 °F | Partly sunny. | 13 mph | ↑ | 81% | 30.00 "Hg | 10 mi |
| 7:51 am | | 63 °F | Partly sunny. | 12 mph | ↑ | 75% | 30.02 "Hg | 10 mi |
| 8:51 am | | 63 °F | Broken clouds. | 12 mph | ↑ | 73% | 30.03 "Hg | 10 mi |
| 9:51 am | | 66 °F | Broken clouds. | 9 mph | ↑ | 68% | 30.04 "Hg | 10 mi |
| 10:51 am | | 68 °F | Broken clouds. | 12 mph | ↑ | 65% | 30.04 "Hg | 10 mi |
| 11:51 am | | 71 °F | Broken clouds. | 10 mph | ↑ | 59% | 30.04 "Hg | 10 mi |
| 12:51 pm | | 72 °F | Scattered clouds. | 8 mph | ↑ | 59% | 30.03 "Hg | 10 mi |
| 1:51 pm | | 74 °F | Passing clouds. | 10 mph | ↑ | 57% | 30.03 "Hg | 10 mi |
| 2:51 pm | | 75 °F | Scattered clouds. | 9 mph | ↑ | 58% | 30.02 "Hg | 10 mi |
| 3:51 pm | | 76 °F | Partly sunny. | 10 mph | ↑ | 54% | 30.01 "Hg | 10 mi |
| 4:51 pm | | 75 °F | Partly sunny. | 13 mph | ↑ | 58% | 30.01 "Hg | 10 mi |
| 5:51 pm | | 74 °F | Partly sunny. | 12 mph | ↑ | 56% | 30.01 "Hg | 10 mi |
| 6:51 pm | | 72 °F | Partly sunny. | 12 mph | ↑ | 48% | 30.03 "Hg | 10 mi |
| 7:51 pm | | 69 °F | Passing clouds. | 8 mph | ↑ | 59% | 30.04 "Hg | 10 mi |
| 8:51 pm | | 67 °F | Passing clouds. | 6 mph | ↑ | 66% | 30.06 "Hg | 10 mi |
| 9:51 pm | | 66 °F | Passing clouds. | 8 mph | ↑ | 65% | 30.06 "Hg | 10 mi |
| 10:51 pm | | 64 °F | Passing clouds. | 7 mph | ↑ | 70% | 30.07 "Hg | 10 mi |
| 11:51 pm | | 61 °F | Passing clouds. | 6 mph | ↑ | 78% | 30.06 "Hg | 10 mi |
| Weather by CustomWeather, © 2025 | ||||||||