How much more likely will you land a job right after college if you have internship experience?

I will be completing an internship in a few weeks at a small company which specializes in foam fabrication and conversion. I will have been there this entire summer (~ 3 months). Although I do not have an official title or do they have an offical engineer working there, my duties closely resemble one of a Manufacturing Engineer. I will graduate this coming December with a Bachelor's of Science in Mechanical Engineering from the University of Colorado at Boulder. How much more likely am I to now land a job immediately after graduation? Should I even expect landing a job right after college?