LONDON—Oil prices were heading for another monthly decline on Friday after disappointing U.S. economic data and uncertainty over further interest rate hikes weighed on the demand outlook.
Brent crude futures for June were up 42 cents, or 0.5 percent, at $78.79 a barrel by 0946 GMT while the more actively traded July contract was down 1 cent at $78.21. Brent is set for its fourth straight monthly fall.