LAS VEGAS (KTNV) — An Excessive Heat Warning is in effect for Southern Nevada until 8 p.m. today as Las Vegas returns to 107° with plenty of sunshine. The average high this time of August is close to 100°. Gusts of 25 mph are expected much of the day.
It's important to stay hydrated and limit outdoor work or exercise to the morning or evening hours.
Las Vegas will drop a few degrees this weekend, with a high limited to 102° on Sunday. Temperatures will still reach 101° on Monday (which will be the 61st day in a row of triple digit heat) but we hope to stay in the upper 90s on Tuesday as we flip the calendar to September. The last time Las Vegas had a high in the upper 90s was July 1st!
Las Vegas headed to the triple digits for the 55th day in a row. pic.twitter.com/oaeLTDKclX— Justin Bruce (@just1nbruce) August 25, 2020
Another factor in the threat of heat illness is limited overnight relief from the warmth. Low temperatures will only drop to the mid-80s at daybreak, just a few degrees shy of record levels, during the next several days.
A trough of low pressure will swing from the Pacific Northwest to the Upper Midwest this weekend, and that should push the ridge of high pressure that's plagued Las Vegas for the last couple of weeks just far enough south to allow for some marginal heat relief.
Look for afternoons to stay below 105° this weekend, and morning lows to drop to the upper 70s starting Sunday for the first time in more than two weeks.