Soybeans also ticked higher, supported by optimism about a resolution to a US-China trade tariff war.
Wheat rose, with spring wheat futures steadying after a five-session slide linked to easing weather concerns in the northern US Plains.
On the demand side, weekly US corn export sales published by the US Department of Agriculture were below a range of trade estimates.
Wheat and soybean exports topped expectations, with the soybean volume dominated by recent big purchases by China.
The Chicago Board of Trade (CBOT) most-active corn contract had added 0.3 percent to $3.64 a bushel by the end of the overnight session.
"There is some support for the corn market because of planting delays in the US Midwest and damage to stocks from the previous crop which was in storage," said Phin Ziebell, an agribusiness economist at National Australia Bank.
"US-China trade talks seem to be progressing well which is positive for beans."
Concerns about planting delays in the US Midwest are providing support to corn, with expectations that farmers could switch some acreage towards later-planted soybeans.
Rain forecast in the week ahead could keep fields in parts of the Midwest soggy after last month's flooding.
"Current forecasts showing warmth and potential above-average rainfall through early April in the Midwestern US raise further concerns for sowing delays," Refinitiv Agriculture Research analysts said.
However, corn planting in the southern United States was running ahead of the usual pace, they added.
The uncertainty surrounding planting conditions has offset pressure from large domestic inventories.
CBOT soybeans were up 0.3 percent at $9.01-3/4 a bushel.
US-Chinese trade talks made "good headway" last week in Beijing and both sides aim to bridge differences during talks that could extend beyond three days this week, White House economic adviser Larry Kudlow said.
As the most valuable US agricultural export to China, soybeans have been a focal point of the tariff dispute.
The latest purchases of US soybeans by China as part of the countries' negotiating true helped boost weekly US export sales, the data published by the US Department of Agriculture showed.
CBOT wheat added 0.6 percent to $4.74 a bushel. MGEX spring wheat was up 1.0 percent at $5.40-3/4, after hitting its lowest since mid-July on Wednesday.