Weather in St. Louis in September
In an average September, St. Louis sees a daily high around 81°F and a low around 61°F, based on 1980–2026 of local climate records.
| Average high | 81°F |
|---|---|
| Typical high range | 72°F to 90°F |
| Average low | 61°F |
| Typical low range | 52°F to 70°F |
| Average daily precipitation | 0.10 in |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
100°F
1990-09-06
Lowest
54°F
1984-09-27
Low
Highest
77°F
2011-09-01
Lowest
36°F
1983-09-23
Feels-like
Highest
133°F
2013-09-09
Lowest
28°F
1983-09-23
Humidity
Highest
21.9 g/m³
2016-09-09
Lowest
4.8 g/m³
1995-09-23
Wind
Highest
22 mph
2008-09-14
Lowest
3 mph
1998-09-17
Gust
Highest
56 mph
2008-09-14
Lowest
7 mph
2007-09-03
Precip
Wettest
7.17 in
2016
Driest
0.26 in
2004
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