The average intern salary at Corona was $13,042 , which is 172 percent higher than the average salary for this job in California, and 201 percent higher than the national average for this job . Intern salaries at Corona typically range from $12,302 to $14,027 (25th to 75th percentile). The highest reported intern salary was $14,270. There are 10 employees at Corona with the job title intern.