Hoover Dam sits above Lake Mead in southern Nevada, about 30 miles from Las Vegas. The area gets plenty of sunshine year-round, and winters are mild compared with many other parts of the U.S.
Lake Mead National Recreation Area spans about 1.5 million acres across Nevada and Arizona, so temperatures can vary by 20–30 degrees from the northern portion to the south.
In spring, it’s sunny without being too hot, making it a comfortable time for hiking, walking around Lake Mead, and exploring Hoover Dam.
If swimming is your priority, summer may be a better choice, when Lake Mead’s water can reach around 85°F (29°C). Just be prepared for daytime temperatures that can climb to a sweltering 110°F (43°C).
Let’s break down what to expect by season.
Nevada Way in Las Vegas / Photo by Lizzie Gerecitano
What Is Hoover Dam and Lake Mead Weather Like in Spring?
This is the most popular time to visit. With warm, sunny days (plus the bonus of spring wildflowers), hiking is in full swing!
The average high temperatures in April, May, and June are 80 - 98 degrees Fahrenheit (27-37C). Nighttime lows are 50 - 66 degrees Fahrenheit (10-19C).
What Is Hoover Dam and Lake Mead Weather Like in Summer?
Record high temperatures define summertime here. So if it’s water activities you’re looking for, with the picturesque mountains surrounding you, this is the time to come.
Swimming, paddleboarding, kayaking, and boating are all popular in the summer.
But you should not hike in this hot weather because it could be downright dangerous.
In fact, some hiking trails are closed down completely for public safety.
The average high temperatures in July, August, and September are 89 - 103 degrees Fahrenheit (32-40C).
The nighttime low averages 77 degrees Fahrenheit (25C).
What Is Hoover Dam and Lake Mead Weather Like in Fall?
This is another great season, and a very popular one for camping. The weather is warm and pleasant, and hiking season starts back up with many trails reopening until summer rolls around again.
The average high temperatures in October, November, and December are 59 - 83 degrees Fahrenheit (15-23C). Nighttime lows are 32 - 50 degrees Fahrenheit (0-10C)
What Is Hoover Dam and Lake Mead Weather Like in Winter?
Winter sunsets are simply spectacular here, and you’ll see the occasional snow-capped mountain, too.
So this is a popular season for photographers, bikers, and campers. The average high temperatures are 57 - 69 degrees Fahrenheit (14-21C).
Nighttime lows are 30 - 40 degrees Fahrenheit (-1-4C)