U.S. Treasury Secretary Timothy Geithner on Friday predicted a 2-to-3 percent growth for the U.S. economy, but warned against possible impacts from some global uncertainties.

"It is still a very uncertain world, but the conventional view of the U.S. is that we are going to grow between 2 to 3 percent," he told a session at the current World Economic Forum's annual meeting in Davos, Switzerland.

"It is a realistic picture as long as we see a little more progress in Europe and as long as we don't see a lot of risk coming from Iran on the oil front," he said.

According to Geithner, the U.S. economy is still confronted with "tremendous challenges."

"We are still repairing damages from the financial crisis .. The unemployment is very high, housing is still very weak and construction is very week, people still have too much debt," he said.