* CBOT December soft red winter wheat settled down 5-1/4 cents at $5.06-1/4 per bushel.
* K.C. December hard red winter wheat ended down 3-1/2 cents at $5.12-3/4 a bushel while MGEX December spring wheat rose 3 cents at $5.75-1/4.
* Wheat futures found underlying support from possible frost damage over the weekend in western Australia, which threatened to further dent a crop already diminished by drought in the east.
* A 630,000-tonne purchase by Saudi Arabia initially lent additional support to wheat futures, although traders said it was unclear if US wheat would be used to fill the optional-origin order.
* The US Department of Agriculture reported export inspections of US wheat in the latest week at 406,004 tonnes, in line with trade expectations for 350,000 to 500,000 tonnes.
* Ahead of the USDA's weekly crop progress report due later on Monday, analysts on average expected the government to report the US winter wheat crop as 14 percent planted and the spring wheat crop as 98 percent harvested.