Vegas on Broil as Upper-100s Heat Wave Slams Valley

By mid-morning Wednesday, June 10, 2026, Las Vegas was sitting pretty under clear skies at about 77°F. That brief comfort window will not last. By late afternoon, the valley is expected to roast into the upper 100s, with a high near 107°F and a multi-day stretch of dangerous heat offering very little relief overnight.

Hot Week Ahead

A strengthening area of high pressure will push daytime highs into the upper 100s. Forecast highs are near 107°F on Wednesday, around 106°F on Thursday and peaking near 108°F on Friday and Saturday, with overnight lows stuck in the low 80s. That pattern brings a widespread Moderate Heat Risk and pockets of Major Heat Risk for some valleys, including parts of the Las Vegas Valley from Friday through Sunday. Forecasters also flag tropical moisture creeping up the Gulf of California that could bump up humidity and lead to some high clouds or isolated storms over the higher terrain in northwest Arizona this weekend, according to the National Weather Service.

Local Help And Resources

Clark County has been activating daytime cooling stations, libraries and other respite sites, including recreational centers, senior centers and shelters, for people who need a place to cool off. Residents are urged to check the county's list for hours and nearby locations before heading out and to shift outdoor chores to the morning or evening whenever possible. Officials are also pressing people to stay hydrated, limit outdoor work during peak heat and check in on older neighbors and anyone without reliable cooling, according to Clark County.

Timing And Impacts

Afternoon and late afternoon will bring the worst of the heat each day. Thermally driven south-southwest winds may gust into the teens or low 20s mph across the valley, which can make it feel hotter and kick up dust in exposed spots. Boaters should be on alert, since gusty winds can churn up reservoirs such as Lake Mead and create choppy, uncomfortable water. If you have outdoor plans, try to schedule strenuous activity before 9 a.m. or after 7 p.m. when conditions are less punishing.

Heat Safety

People without reliable air conditioning, older adults, young children and pets are most at risk in this kind of heat, and officials stress that no one should ever be left in a parked car. Take frequent breaks in the shade, drink water before you start feeling thirsty and avoid heavy exertion during the hottest part of the day. If you need a break from the heat, cooling sites and public libraries are open across the valley.