I'm told that the western desert of Chile probably ranks as the driest place on the planet. Certain regions of Arizona, however, are strong contenders.
Once a visitor to a small community near Yuma inquired of a local,
"Does it ever rain out here?"
The response was quick and direct:
"Yes, it does."
"When?" asked the visitor.
"Do you remember that part in the Bible where it rained for 40 days and 40 nights?"
The visitor replied, "Yes, I'm familiar with Noah's flood."
"Well," the Arizonan puffed up, "we got about half an inch that time ..."