Todays weather in Las Vegas - Sunday - 31 May 2026

Las Vegas is starting the week with a rare gift: clear skies, a comfortable 69 degrees, and a light westerly breeze. Enjoy it while it lasts — because the forecast that follows is no joke.This daily weather briefing breaks down everything you need to know for the days ahead. Today is genuinely pleasant, and Sunday still offers a tolerable outdoor window if you plan your morning early. But Monday kicks off a sustained stretch of triple-digit heat that runs straight through next Saturday with zero percent chance of precipitation. Highs climb from 95 on Sunday to 100 on Monday, then 101, 102, and hold there. Overnight lows creep into the mid-seventies by mid-week, meaning your body won't get the cooling reset it needs between days. Cumulative heat exposure is the risk people consistently underestimate.The practical advice: get outdoor errands done before noon today, make Sunday morning your last outdoor activity window before the heat locks in, and starting Monday treat hydration as non-negotiable. Peak danger hours run from 11am to 4pm. Light, loose, light-colored clothing and sunscreen are your basics. No active alerts are in place right now, but a multi-day 100-plus run with warm nights is exactly the pattern that leads to heat illness — especially for kids, older adults, and anyone without reliable air conditioning.Wind picks up toward the end of the week, touching 20 mph by Saturday, but don't expect relief — at these temperatures, moving air just moves hot air.Under 3 minutes. Everything you need. Stay safe out there.This episode includes AI-generated content.