SOIL SURVEY OF THE MIDDLE GILA VALLEY, ARIZONA. 9 



Normal monthly, seasonal, and annual tempero/ture, etc. — Continued. 



While precipitation may occur in any month in the year, two wet 

 seasons are the general rule. The spring and fall months are usually 

 warm and dry. The following table gives the best data available 

 as to the annual precipitation at five stations : 



Annual precipitation at five stations, Middle Gila Valley Area. 



Where blanks occur, no record is available. 

 155289°— 20 2, 



