Clouds hang in the sky across the Las Vegas Valley on Sunday, Aug. 9, 2026. (Chase Stevens/Las Vegas Review-Journal) @csstevensphotoClouds, some reflected in the Las Vegas City Hall building, hang in the sky on Sunday, Aug. 9, 2026. (Chase Stevens/Las Vegas Review-Journal) @csstevensphotoSunlight hits The Strat as clouds hang in the sky across the Las Vegas Valley on Sunday, Aug. 9, 2026. There’s a 30 to 40 percent chance of thunderstorms hitting Southern Nevada today, said Ashley Nickerson, a meteorologist with the National Weather Service office in Las Vegas. — Las Vegas recorded its first 110-degree day of the year on July 8.