Are you actually serious to provide local weather conditions to your analysis? Weather in Wisconsin was X, here in Missouri the hay price is Y. (Hay I might add is not a food input nor a cash crop.)
Really?
https://www.nytimes.com/2018/11/05/business/soybeans-farmers...
Would be one example but aside from any trade war there's a massive glut of food supply and before you call this media anecdotal I'd suggest you study the topic.