Usually the only type of icy slush seen during a Mexico summer is one being sipped through a straw to cool down on a hot day.
The residents of Guadalajara found themselves in many feet of it Sunday morning after a freak hailstorm created a surreal scene by burying cars and roads in mounds of slush.
"I've never seen such scenes in Guadalajara," Enrique Alfaro, the state governor, told Agence France-Presse.
The temperatures were in the 80s in the Mexican city before the hailstorm hit.
Residents awoke to an alien-looking landscape and found themselves climbing over piles of slush that were several feet high in some areas.
There were no casualties, but at least 50 vehicles got swept away by the ice in mountainous areas, and nearly 200 homes and businesses were damaged by the hail, AFP reported.
The surreal scene was reminiscent of the icy wonderland in Niagara Falls during the winter and the stunning ice shards in Lake Michigan in the spring, with the major exception that the hailstorm came during a time when Guadalajara is usually scorching hot.
"Then we ask ourselves if climate change is real,'' Alfaro told AFP. "These are never-before-seen natural phenomenons. It's incredible."