Las Vegas is already off to a blazing start on Monday, July 20, 2026, with morning temperatures stuck in the upper 80s and an afternoon high near 106°F on the way. Overnight, the heat barely lets up, with lows holding in the upper 80s and offering little real relief after dark.
Afternoon Storms Possible
Monsoonal moisture will keep a slight chance of showers and thunderstorms in play through the afternoon, with the best odds over the nearby mountains and east of the valley. Any storm that drifts into lower elevations could bring lightning, sudden gusty outflow winds, and brief heavy downpours, though most of the action is expected to fade after sunset.
Heat Through The Week
The National Weather Service is calling for highs in the 106 to 111°F range through the coming week, with Tuesday and Wednesday topping out near 106 to 107°F and hotter readings toward the end of the week. Moist nights and lingering cloud cover will keep lows around 89 to 91°F and maintain a Minor to Moderate heat risk, according to NWS Las Vegas.
Plan For Outdoor Activities
Shift heavy outdoor chores, workouts, or hikes to early morning or evening, carry plenty of water, and keep an eye out for sudden gusts or lightning if you head into higher terrain. If you need a cool place to ride out the worst of the heat, Clark County has activated daytime cooling stations across the valley - see the current list at Clark County.
