Tucson had a trace of snow fall on Easter, April 4, 1999. The official measurement for Tucson for that date as reported by the National Weather Service is 0.02 inches of snow. Some of the surrounding communities received more than that amount.
Burchell, Joe and L. Anne Newell. "Heaven Sent - Snow is extra gift Easter Bunny left for area residentsopens a new window." Arizona Daily Star. April 5, 1999. Page 8A.
Find the information you need by calling the library's Infoline at 520-791-4010 or by sending your question to Askalibrarian.