Las Vegas is starting Wednesday under clear skies, but the comfortable part of the day will disappear quickly. Temperatures are expected to climb from the low 80s early to around 110 degrees this afternoon, with little relief after sunset as the overnight low remains near 88.
Wednesday And Thursday Bring Dangerous Heat
The National Weather Service in Las Vegas has an Extreme Heat Warning in effect through 8 p.m. Friday, as daytime temperatures reach 110 degrees Wednesday and 108 degrees Thursday. Heat-index values could reach 105, while afternoon winds may gust up to 20 mph Wednesday and 18 mph Thursday.
The latest warning marks a new hot stretch after the late-July heat wave, but this forecast is beginning to show a shift. According to the National Weather Service, monsoon moisture will increase later this week, bringing at least a chance of storms.
Storm Chances Rise Friday
Friday should still be mostly sunny and hot, with a high near 106 degrees, but isolated showers and thunderstorms could develop after 11 a.m. The chance of precipitation is about 20% in the Las Vegas forecast, and any storms could bring sudden gusty winds, lightning, heavy rain and localized flooding.
Saturday is expected to turn sunny again with a high near 106, while Sunday brings a slight chance of afternoon and evening showers or thunderstorms and a high near 105. Storm chances remain in the forecast Monday and Tuesday, even as highs ease to around 102 degrees.
Overnight Relief Will Stay Limited
Nighttime temperatures are forecast to remain unusually warm, with lows near 89 Thursday night, 85 Friday night and 86 Saturday night. Lows should gradually fall into the low 80s early next week, but the combination of extreme afternoon heat and warm nights will continue to raise the risk of heat-related illness.
Residents should limit strenuous outdoor activity during the hottest part of the day, drink plenty of fluids and use air conditioning or another cooled indoor space when possible. Young children and pets should never be left in unattended vehicles, where temperatures can become lethal within minutes.
