In July, typical afternoon highs at Gateway Arch run around 91°F (hot). Mid-afternoon sun stands about 60° high, and the sun is up from 5:48 AM to 8:24 PM. Monument plazas are mostly open pavement — natural shade is scarce, so timing matters.
See live sun & real shadows here →| January | 35°F |
| February | 43°F |
| March | 64°F |
| April | 68°F |
| May | 73°F |
| June | 86°F |
| July | 91°F |
| August | 86°F |
| September | 83°F |
| October | 72°F |
| November | 57°F |
| December | 46°F |
Monument plazas are mostly open pavement — natural shade is scarce, so timing matters. See real building shadows over satellite imagery for any time of day: https://isthereshade.com/?anywhere&at=38.6246,-90.185
Around 8:24 PM local time in mid-July (it shifts through the year). Sunrise is about 5:48 AM.
Gateway Arch — St. Louis, MO. Data: astronomical sun position; climate normals from historical weather; live forecast on the interactive view.