Nationwide, fall temperatures have risen by about 3 degrees over the last five decades. They’ve jumped even higher across the Mountain West and Southwest, where fall is warming faster, according to a report by Climate Central, a policy-neutral nonprofit.
Since 1970, Reno, Nev., has warmed nearly 8 degrees – the most in the nation. Not far behind are Las Vegas and Phoenix (6 degrees) and Colorado Springs (5 degrees). Other Mountain West cities have seen average fall temperatures increase about 4 degrees, including Denver, Boise, Albuquerque, Salt Lake City, and Cheyenne.
That extra heat brings real challenges for people in the West, said Kaitlyn Trudeau, a researcher at Climate Central…