13 First Alert Weather Forecast | Thursday morning, Sep. 9, 2021

LAS VEGAS — South winds blow at 15-25 mph this afternoon as highs reach 104° (the Excessive Heat Warning runs until 9 p.m.) and an uptick in humidity fuels a 20% rain and storm chance this afternoon. The mountains see a more likely 40% chance for downpours with lightning. Any rain will fizzle this evening, and lows tonight drop to the low 80s. Friday delivers another isolated rain chance in the valley (only 10%) with more scattered storms in the higher terrain (30%) as temperatures reach 103° and humidity lingers. Highs remain between 100° and 105° this weekend through the middle of next week, which is more than 5° above average. Breezes will linger from the south or southwest with gusts up to 20-25 mph across the weekend. Humidity should taper quite a bit on Monday, and that will allow low temperatures to drop from the low 80s to the mid 70s Monday night and beyond.