LAS VEGAS (KTNV) — MORNING: A warm start in the mid-to-upper 80s around Las Vegas with sun and light winds. AFTERNOON: Partly cloudy and a bit humid with highs near 111° and light winds at 5-15 mph. EVENING: Partly cloudy with 5-10 mph breezes and readings in the triple digits until 9 p.m.TONIGHT: Partly cloudy and warm with lows in the upper 80s. The chance in Las Vegas is only 10%. The heat risk remains "major" to "extreme" through the weekend and the Extreme Heat Warning has been extended to Sunday as highs remain in the range of 111° to 113° each afternoon.