From The Yuma Pioneer (Tony Rayl):
It is the first time in recent memory topping 20 inches in a calendar year. The traditional average annual precipitation is between 15 to 20 inches. The precipitation level being reported here is a combination of the Weather Underground stations at the Y-W Combined Communications Center, which reliably recorded moisture through September, and the one at Bo and Patty Vaughn’s residence west of town, which has been reliable lately but was offline in May and June when much of the moisture fell. Sunday’s snow storm resulted in .23 of an inch of moisture, putting Yuma’s total precipitation to date in 2009 at 20.06 inches.