Chicago Board of Trade (CBOT) grains futures closed higher on Wednesday with the wheat going through ups and downs amid profit-taking.

The most active corn contract for December delivery rose 4.75 cents, or 1.19 percent, to 4.04 dollars per bushel. September wheat delivery went up 5 cents, or 0.9 percent to 5.60 dollars per bushel. November soybeans went up 13.5 cents, or 1.38 percent, to 9.9425 dollars per bushel.

CBOT brokers estimated that funds were net buyers of 6,000 contracts of corn and 5,000 contracts of soybeans while selling 1,000 contracts of wheat.

Warmer and drier weather forecasts have sent wheat price to new high following six consecutively rising sessions. The wheat futures just managed to keep in the positive territory at close, said analysts.

"Futures really started higher but profit-taking put a lid on the market," said Virginia McGathey, from McGathey Commodities.

"It still looks like the hot and dry conditions are going to remain, so we expect that there is going to be big volatility in the rest of summer," he added.

Corn and soybean stayed firm on Wednesday, with soybean inching toward 10 dollars per bushel mark.