I guess the MidSouth is wet-humid no matter how dry the weather, because my family had the driers on 24/7 this year.

And Bunge, along with Cargill, Riceland have a reputation for blending (wet and trashy grain).

Sorry for the lecture and catching up so late on a reply.  I didn't know you were knowledgeable on grain.

Yes, the midwest can get powdery dry in the fall.  Relative humidity can get in the single digits in the 60's after frost at dawn.  But that often cycles with rain events as we move towards winter, when the humidy is always low.  Even if relative humidity is high, there is not a lot of water in 20 F air!

I understand your perspective.  I lived in south Texas for awhile and the winters were MORE humid than the summers.  Mold a constant concern year round.