Willis Tower
The Willis Tower is a 442-meter skyscraper and office building in Chicago made of glass, aluminium, and steel. Commissioned by Sears and designed by Skidmore, Owings and Merrill, Bruce Graham, and Fazlur Khan, it houses occupants such as United Airlines and Willis Group. It is one of the most looked-up sights in the United States on English Wikipedia.
Planning a visit
The tower is at 233 S Wacker Dr and is open every day of the year, including holidays. From April to September, it is open from 9 AM to 10 PM, and from October to March, it is open from 10 AM to 8 PM. Admission is $22, with $11 for children and $30 for express line tickets. The building is 14 km from Chicago Midway International Airport and 956 km from Washington, D.C. It is 1 km from the Art Institute of Chicago and 1.4 km from the Trump International Hotel and Tower.
The warmest weather occurs in June, July, and August, when daily highs are between 25 °C and 28 °C. The lowest temperatures are in January, with a daily high of 0 °C and a low of -7 °C. The highest rainfall occurs in May and August, with 111 mm and 115 mm respectively.
Weather by month
The warmest month is July, with an average high of 28 °C. Rain is spread fairly evenly through the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | 0 | 1 | 6 | 12 | 19 | 25 | 28 | 27 | 23 | 16 | 9 | 2 |
| Average low, °C | -7 | -6 | -1 | 5 | 12 | 18 | 21 | 21 | 17 | 10 | 3 | -3 |
| Rainfall, mm | 58 | 56 | 70 | 96 | 111 | 111 | 109 | 115 | 89 | 90 | 88 | 65 |
| Rainy days | 8 | 8 | 10 | 12 | 14 | 12 | 12 | 12 | 10 | 11 | 7 | 8 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.
