Las Vegas forecast 15–20 degrees above normal

Las Vegas is getting a very summer-like weekend in the middle of May. The forecast is calling for the city’s first 100-degree stretch of 2026, and not just for one afternoon — the heat is set to hang on through Mother’s Day and into early next week. That matters because this is early-season heat, when people are less acclimated, outdoor plans are already locked in, and the city still feels like it should be in spring. ### How hot are we talking? For central Las Vegas, NOAA’s latest point forecast shows a high near 100°F on Saturday, 101°F on Sunday, 104°F on Monday, and 103°F on Tuesday, with overnight lows mostly in the low to mid-70s. In other words, this is not a quick spike that disappears after sunset — nights stay warm enough to limit the reset. (forecast.weather.gov) ### Why does “15 to 20 above normal” matter? Because the normal high for this point in May is about 85°F in Las Vegas. The daily climate report for May 8 lists 85°F as the normal maximum, and forecasters say temperatures will run around 10 to 20 degrees hotter than normal early next week. So when the city jumps from a typical mid-80s pattern to 100-plus, that is a real departure, not just “pretty warm for Vegas.” (forecast.weather.gov) ### What’s driving it? A ridge of high pressure is parked over the region and holding there into next week. Basically, that ridge acts like a lid — it favors sinking air, lots of sun, and very little relief. The Las Vegas forecast office says temperatures should keep climbing through the weekend, peak Monday and Tuesday, then ease only slightly as the ridge weakens and a trough approaches the West Coast. (forecast.weather.gov) ### Is this just a Strip forecast? Not really. The broader Las Vegas Valley forecast is even hotter in some east-side neighborhoods. NOAA says Saturday highs could reach 100 to 103°F on the east side, then 103 to 106°F on Monday, with Tuesday still at 102 to 105°F there. So the headline city number can understate what some parts of the valley actually feel. (forecast.weather.gov) ### Are records actually in play? Yes — at least near-record and record highs are on the table from Mother’s Day through at least Tuesday. Local forecasters flagged that stretch explicitly, and the setup fits: several consecutive days at or above 100°F in early May, before the usual deep-summer baseline arrives. (forecast.weather.gov) ### Who feels this first? People outdoors for long stretches. The Las Vegas forecast office says Minor-to-Moderate HeatRisk becomes more widespread through Saturday, with Moderate HeatRisk more common next week. That especially affects heat-sensitive people and anyone without reliable cooling or enough hydration. Tourists walking the Strip, families at parks, event staff, rideshare drivers waiting curbside, and construction crews all get the hard version of this first. (news3lv.com) ### Does it cool off soon? A little, but not in a meaningful spring way. Forecast highs fall back to around 98°F on Wednesday and about 95°F by Thursday and Friday in the city forecast. That is lower than the Monday peak, but it is still hot for mid-May. ### Bottom line? This is Las Vegas’s first real taste of summer in 2026, arriving early and running hotter than normal for several days. (forecast.weather.gov) If you have outdoor plans through Tuesday, the useful assumption is simple: treat it like a June heat event, not a pleasant May weekend. (forecast.weather.gov)