• Looking up at the Gateway Arch

    Jefferson

    National Expansion Memorial Missouri

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  • Due to the Industrial Rope Access Project at the Gateway Arch

    Visitors may enter the Arch at the south leg only. Tram rides to the top are still available, the observation deck at the top will have restrictions. Usual walking paths may be closed; please look for signage or a Ranger for walking directions.

Weather

Summer is high season at the Jefferson National Expansion Memorial. Come early, or come late (the crowds are light during the evening). Make a day of it -- plan a visit to another of the city's terrific attractions. During August and September, the crowds thin out as kids return to school. Fall is a busy time due to many group tours. The day after Thanksgiving is one of the busiest days so be sure to arrive early!

Winter is a perfect time to visit! There are no lines for the trams, no waiting for movies, and the weather is surprisingly mild. Prolonged periods of extremely cold weather are rare, and in fact, records show that the temperature doesn't get lower than 32 degrees more than 25 days throughout the winter!

When spring returns, so do the group tours. In May and early June, there are light crowds with minimal waiting. The weather is mild and the extended hours give your plans flexibility.


Normal Daily Mean Temperature (in degrees Fahrenheit)*

January - 29.3
February - 33.9
March - 45.1
April - 56.7
May - 66.1
June - 75.4
July - 79.8
August - 77.6
September - 70.2
October - 58.4
November - 46.2
December - 33.9


Average Percent of Days with Sunshine*

January - 50%
February - 52%
March - 54%
April - 56%
May - 59%
June - 66%
July - 68%
August - 65%
September - 63%
October - 60%
November - 46%
December - 53%

*Source: National Oceanic and Atmospheric Administration







Did You Know?

Cartoon fiddle

Pierre Cruzatte and George Gibson brought their fiddles along on the Lewis and Clark expedition. Their music entertained the group on many evenings. Click here to learn more about Lewis and Clark and the Corps of Discovery. More...