Chicago Board of Trade (CBOT) grains futures closed higher Monday with corn, wheat and soybeans jumping more than 2 percent on outlooks for more hot and dry weather in the Midwest and northern Plains area.

The most active corn contract for December delivery rose 10 cents, or 2.47 percent, to 4.1475 dollars per bushel. September wheat delivery added 15 cents, or 2.80 percent to 5.50 dollars per bushel. November soybeans jumped 23.75 cents, or 2.34 percent, to 10.3925 dollars per bushel.

Along with price-supportive hot and dry weather, outside investors are switching bets that the market will go lower to bets that the markets will go higher. A lot of that mentality is driven by drought conditions in the northern Plains states.

In the outside markets, the Brent crude oil market is 0.30 dollar per barrel higher, the U.S. dollar is lower, and the Dow Jones Industrials are 18 points higher.

U.S. Commodities grain analyst Jason Roose said prices are trading sharply higher with a warmer, drier weather forecast which could possibly slow crop development. Monday's United States Department of Agriculture crop ratings are anticipated to drop 1-2 percent which is adding to the short-covering.