The department was likely to show 67 percent of the US corn crop rated in good to excellent condition. That would be down 1 percentage point from a week ago.
Spring wheat was expected to be rated 53 percent in good to excellent condition, off 2 percentage points from last week as hot temperatures and limited rainfall in the central United States stressed developing corn and wheat plants.
The government was scheduled to release the report at 3 p.m. CDT (2000 GMT) on Monday.
Analysts also predicted the US soybean crop, in the first condition rating of the season, at 70 percent good to excellent, while soybean plantings were seen advancing to 94 percent complete, up from 83 percent planted last week.
The winter wheat harvest likely advanced to 22 percent done, up from 10 percent a week ago.