Is this even possible?

[Jessie-Jess]

Does anyone here know of a way to (online) check the weather conditions from point A to point B (over a few states in the US for example), in the past (not just future)? I've tried figuring it out myself and it's rather stressful, so if anyone could explain to me how, it would be appreciated. Thank you. 

[aka]

The weather in past months? Surely there must be excess to such a data base. But where to find it? Hard task indeed. This is all I found that could lead to some sort of help for you if you would write an email to the program's manager.

http://www.accuweatherglobal.com/default.php

[Jessie-Jess]

Thank you.