Weather in St. Louis in August
In an average August, St. Louis sees a daily high around 87°F and a low around 69°F, based on 1980–2026 of local climate records.
| Average high | 87°F |
|---|---|
| Typical high range | 80°F to 95°F |
| Average low | 69°F |
| Typical low range | 61°F to 76°F |
| Average daily precipitation | 0.10 in |
August records
The most extreme August on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total August accumulation.
High
Highest
103°F
2013-08-31
Lowest
68°F
2004-08-12
Low
Highest
81°F
1980-08-02
Lowest
47°F
1986-08-29
Feels-like
Highest
145°F
2023-08-25
Lowest
45°F
1986-08-29
Humidity
Highest
26.1 g/m³
2023-08-22
Lowest
7.4 g/m³
1986-08-28
Wind
Highest
15 mph
1999-08-13
Lowest
3 mph
2024-08-11
Gust
Highest
36 mph
2000-08-05
Lowest
8 mph
1981-08-04
Precip
Wettest
8.00 in
2016
Driest
0.85 in
2025
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