Hoover Dam Hoover Dam
Boulder City, United States
Hoover Dam is an arch-gravity dam, embankment dam, and hydroelectric power station in Boulder City, United States. Named after Herbert Hoover and Boulder Canyon, the structure is 221 m high and 379 m long. The site features Art Deco architecture designed by Gordon Kaufmann and is operated by the United States Bureau of Reclamation. It is a National Historic Landmark, a Historic Civil Engineering Landmark, and is listed on the National Register of Historic Places. It is one of the 25 most looked-up sights in the United States on English Wikipedia.
Planning a visit
The climate is hot in the summer, with July having average highs of 42 °C and lows of 29 °C. The coolest months are January and December, with average highs of 15 °C. Rainfall is low throughout the year, with the highest monthly average being 22 mm in February.
The site is 13 km from Boulder City Municipal Airport and 38 km from Harry Reid International Airport. It is 3320 km from Washington, D.C. A visit can be combined with the Las Vegas Strip, which is 40.8 km away.
The dam is accessible from 5 AM to 9 PM. The visitor center is open daily from 9 AM to 5 PM, and the parking garage is open from 8 AM to 5:15 PM.
Weather by month
The warmest month is July, with an average high of 42 °C. Rain is spread fairly evenly through the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | 15 | 18 | 23 | 28 | 34 | 39 | 42 | 40 | 36 | 29 | 21 | 15 |
| Average low, °C | 5 | 7 | 11 | 15 | 20 | 25 | 29 | 28 | 24 | 17 | 10 | 6 |
| Rainfall, mm | 16 | 22 | 15 | 6 | 3 | 2 | 10 | 14 | 9 | 11 | 10 | 15 |
| Rainy days | 4 | 3 | 4 | 2 | 2 | 0 | 4 | 4 | 2 | 1 | 2 | 2 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.
