Temperature variations between night and day tend to be moderate during summer with a difference that can reach 29 degrees Fahrenheit, and moderate during winter with an average difference of 27 degrees Fahrenheit. The annual average precipitation at Apache Junction is 12.29 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is March with an average rainfall of 1.96 Inches. (APACHE JUNCTION 5 NE Weather station, 5.50 miles from Apache Junction)