Las Vegas

Las Vegas Braces for Soaring Temperatures, National Weather Service Warns of High HeatRisk

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Published on May 19, 2025
Las Vegas Braces for Soaring Temperatures, National Weather Service Warns of High HeatRiskSource: Google Street View

Residents and visitors of Las Vegas should expect rising temperatures this week. "Temperatures will climb through the week, reaching above-average by Tuesday and approaching triple-digits for valley locations by the end of the week," according to the National Weather Service. Today, north-northwest winds are expected to cause 1 to 2-foot waves on Lake Mohave.

The forecast indicates increased heat with a need for hydration and cooling measures. "The probability of reaching 100 degrees in Las Vegas on Thursday has increased to 80 percent," and Death Valley is expected to reach around 110 degrees. The National Weather Service has issued a Moderate (Level 2) HeatRisk midweek and a possible Major (Level 3) HeatRisk in some areas. Aviation conditions remain clear, with "Winds will continue to favor a northerly direction with 15 to 20 knot wind gusts picking up after 15Z," and winds shifting southwest after sunset.

By Friday, forecast models show uncertainty due to the interaction between a rebuilding ridge and a shortwave from the Pacific Northwest, making the weekend outlook unclear. The National Weather Service states, "After that, there is too much model variance to determine potential impacts and specifics." Weather spotters are advised to monitor conditions and report any significant events as required. Las Vegas may experience high temperatures, strong winds, and changing weather patterns.