Extreme heat is one of the most serious weather hazards affecting Southern Nevada, especially during our long summer season. High temperatures are more than just uncomfortable–they can become dangerous or even life-threatening within minutes or hours of exposure. The facts below highlight the impact of extreme heat locally and around the world:

• Heat is the leading weather-related cause of death in the United States, responsible for more deaths each year than floods, hurricanes and tornadoes combined.
• There were 284 heat-associated deaths in Clark County in 2025—a 45% decrease compared with the 513 deaths reported in 2024.
• According to the National Weather Service, 2025 was the fifth-warmest year on record for Las Vegas, with 77 days reaching temperatures of 100 degrees or higher.
• Las Vegas can experience 100+ days above 100 degrees during extreme summers.
• Recent summers have included multiple consecutive days above 115 degrees, setting or approaching local records.
• The hottest temperature ever recorded in Las Vegas was 120 degrees on July 7, 2024—a record that was tied the following day.
• Overnight temperatures during heat waves can remain dangerously high, limiting the body’s ability to cool down.
• In Clark County, the highest number of heat-related illnesses and deaths typically occurs in August, the peak of summer heat exposure.

As temperatures rise, remember to stay hydrated, limit time outdoors during peak heat, and check on vulnerable populations, including older adults, children and those without access to cooling.

For more information, tips and resources, visit www.SNHD.info/BeattheHeatSNV.