Typical August weather
St. Louis
Missouri · August
88° days
69° nights
about 5 rainy days · 13½ hours of daylight
What to pack
- Swimsuit
- Sunscreen
What August feels like
August is when the city collectively gives up on doing anything outdoors before sundown. The Japanese Festival at the Botanical Garden over Labor Day weekend is the traditional signal that the worst of it is nearly over.
Expect about 5 days with real rain — enough to notice, not enough to plan around. It’s sticky — light fabrics and an afternoon break earn their keep. about 13 afternoons top 90°.
The numbers
| Typical high | 88° |
|---|---|
| Typical low | 69° |
| Days with real rain | 5 |
| Total rain | 3.4 in |
| Humidity | sticky |
| Sunrise / sunset (mid-month) | 6:15 am / 7:55 pm |