Quote from Pa(b)st Prime:
It's not so much "each" month that does it's own thing. Different crop years do their own thing. The CBOT Wheat contract is Soft-red Winter Wheat harvested in the early SUMMER. Thus July/07 Wheat is the Wheat that's just now being planted. The prices that are exploding (Dec/06, Mch/07) are existing supplies of wheat.
BTW: I hear funds are long the fronts, Cargill and other commercials are shorts spreads and a few locals are down millions.
The way I look at the markets, each "month" has its own uniqueness of oscillation. Yes, there are similarities but I read and take my signals from market specifics and they are unique from month to month.
The indy feedlots I help out in Kansas have been long Dec. Wheat & Corn since mid September. Talk about one happy bunch of ranchers. IMHO Corn could be potentially topping here.