The usual sunny winter weather is interrupted a few times per month by frontal storms that bring gentle rain and cooler temperatures for a day or two. During El Niņo winters such storms are much more frequent, and rarer during La Niņa winters.


Retrieved from the Arizona-Sonora Desert Museum web site on 01-21-2022
http://desertmuseum.org/desert/habitats_AZUTucsonMts16.php