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 Ni�o winters such storms are much more frequent, and rarer during La Ni�a winters.

Retrieved from the Arizona-Sonora Desert Museum web site on 04-19-2024
http://www.buffelgrass.org/desert/habitats_AZUTucsonMts16.php