Typical July weather
St. Louis
Missouri · July
90° days
71° nights
about 6 rainy days · 14½ hours of daylight
What to pack
- Swimsuit
- Sunscreen
What July feels like
Fair Saint Louis sets up under the Arch over the Fourth and the riverfront fills right up. The Arch grounds carry almost no shade, so do that visit early; the pavement here holds its heat well past sunset.
Expect about 6 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 16 afternoons top 90°.
The numbers
| Typical high | 90° |
|---|---|
| Typical low | 71° |
| Days with real rain | 6 |
| Total rain | 3.9 in |
| Humidity | sticky |
| Sunrise / sunset (mid-month) | 5:48 am / 8:24 pm |