LAS VEGAS — It's partly cloudy and we'll hit 100° by 11:00 a.m. before reaching 107° this afternoon as southwest winds blow at 15-25 mph. Scattered thundershowers are expected over the mountains by noon, and will drift north across the valley with gusty winds, lightning, and scattered downpours through afternoon. There's a 30% chance of rain today, which tapers to a 10% chance this evening. The chance is a bit lower on Friday afternoon, around 20%. We'll drop from the 90s this evening to the mid 80s for a few hours around sunrise tomorrow. Monsoon mugginess continues Friday; aside from the stray storm chance, it will be partly cloudy with highs around 108° and south winds at 15-25 mph. Weekend highs reach 109° on Saturday and Sunday as rain chances drop to 10% and the humidity dips each afternoon under a partly cloudy sky. Highs around 107°-108° next week as marginal humidity lingers alongside mostly sunny skies and south winds at 15-25 mph. Nighttime lows remain in the mid and upper 80s during this stretch, which yields quick warm-ups through the 90s between 7:00 a.m. and 10:00 a.m. most mornings. Aside from a 10% rain chance on Monday, next week should be dry.
To beat the heat, shift outdoor activities to between 5:00 a.m. and 9:00 a.m. or wait until after 7pm to avoid direct sunshine; sun set is near 8:00 p.m. but it doesn't get dark until after 8:30 p.m. When working or exercising outside remember to drink extra water, seek shade, and wear lightweight, light-colored clothing with a hat and sunscreen. Avoid excess caffeine and alcohol. Keep a close eye on pets to make sure they are drinking plenty of water. It's important to watch those vulnerable to the intense heat, including young kids, the elderly, and people with health issues that make them prone to heat illness.