Lake Mead Weather & Climate: Best Time to Visit

The climate in Lake Mead is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a very hot 42°C (108°F) in July. In December, the coolest month of the year, temperatures drop to a moderate 14°C (57°F).

At night, temperatures range from around 28°C (82°F) in July to 3°C (37°F) in December.

Check out our detailed temperature page for more information.

Temperature ranges by month

Lake Mead is known for its low rain/snowfall, with yearly precipitation amounts around 130 mm (5.1 in). Lake Mead can be quite wet during December, receiving approximately 29 mm (1.1 in) of precipitation over 5 rainy days.

In contrast, during the driest month (June), you will experience much drier conditions, with 0.7 mm (0.03 in) of precipitation spread across a single rainy day. For more details, please visit our Lake Mead Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Lake Mead can be enjoyed more throughout the sunniest month of June under a blue sky, with approximately 13.7 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 8.0 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is low throughout the year in Lake Mead.

The city experiences its highest humidity in December, reaching 45%. In June, the humidity drops to its lowest level at 17%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year