Traders were squaring positions ahead of US Department of Agriculture reports due at 11 a.m. CST (1700 GMT), including monthly supply and demand, quarterly grain stocks and annual US winter wheat plantings.
WHEAT - Up 1 to 4 cents per bushel
Wheat firmed on pre-report short-covering, rebounding after falling sharply to a one-week low on Thursday.
USDA was expected to show US farmers planted fewer acres of winter wheat last year.
US soft red winter wheat was priced the cheapest in tender issued by Egypt's state grain buying agency. Results were awaited.
CBOT March wheat last traded up 4-1/4 cents at $5.17-1/2 per bushel. K.C. March hard red winter wheat was up 1-3/4 cents at $4.98 a bushel and MGEX March spring wheat 1/4 cent higher at $5.64-3/4.
CORN - Up 1 to 2 cents per bushel
Corn edged up after one-week low on Thursday as traders evened positions ahead of the USDA data.
Analysts expected USDA to show smaller year-on-year quarterly corn stocks as of Dec. 1.
The Korea Feed Association rejected all offers and made no purchase in a tender to buy up to 65,000 tonnes of corn which closed on Friday, European traders said.
CBOT March corn last traded up 1-1/2 cents at $3.78 per bushel.
SOYBEANS - Up 1 to 2 cents per bushel
Soybeans recovered on short-covering from two-week low reached on Thursday. Pessimism that the United States and China would reach a trade agreement by a March 1 deadline, potentially hampering American soybean exports to the world's biggest importer, weighed on the soy complex on Thursday.
Analysts expected USDA to show larger year-on-year US soybean supplies as of Dec. 1, partially due to US-China trade war that slowed overseas shipments.
CBOT March soybeans traded up 1-3/4 cents at $9.15 a bushel.