Weather in St. Louis, Missouri, United States in September
In an average September, St. Louis sees a daily high around 82°F and a low around 59°F, based on 1981–2026 of local climate records.
| Average high | 82°F |
|---|---|
| Typical high range | 72°F to 91°F |
| Average low | 59°F |
| Typical low range | 50°F to 69°F |
| Average daily precipitation | 0.10 in |
September records
The most extreme September on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
102°F
1990-09-06
Lowest
54°F
2000-09-25
Low
Highest
74°F
2012-09-01
Lowest
33°F
1995-09-23
Feels-like
Highest
129°F
2013-09-09
Lowest
27°F
1995-09-23
Humidity
Highest
22.0 g/m³
2012-09-01
Lowest
4.0 g/m³
1989-09-23
Wind
Highest
30 mph
2008-09-14
Lowest
4 mph
1990-09-08
Precip
Wettest
9.44 in
1993
Driest
0.30 in
2004
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