Gateway Arch
St. Louis, United States

The Gateway Arch is a stainless steel monument, park, and architectural landmark designed by Eero Saarinen in a high-tech style. Standing 192 meters tall, it is a National Register of Historic Places listed place and one of the 120 sights of the United States featured on this site.
Planning a visit
The best time to visit is when temperatures are warmer, such as in June, July, or August, when daily highs reach between 29 °C and 32 °C. For those who prefer milder weather, April and October offer highs around 20 °C. Rainfall is most frequent in May, which has about 15 rainy days, while January and February are the coldest months with lows reaching -4 °C and -2 °C.
To reach the site, you can fly into St. Louis Lambert International Airport, which is 21 km away. The monument is located 1,139 km from Washington, D.C. It is one of the most looked-up sights in the United States, ranking 36th among the country's sights on English Wikipedia.
Weather by month
The warmest month is July, with an average high of 32 °C. Rain is spread fairly evenly through the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | 5 | 8 | 14 | 20 | 25 | 29 | 32 | 31 | 27 | 20 | 13 | 6 |
| Average low, °C | -4 | -2 | 3 | 9 | 15 | 20 | 22 | 21 | 17 | 11 | 5 | -2 |
| Rainfall, mm | 63 | 65 | 89 | 114 | 137 | 126 | 113 | 93 | 92 | 94 | 101 | 80 |
| Rainy days | 7 | 7 | 11 | 11 | 15 | 13 | 14 | 12 | 8 | 8 | 8 | 8 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.