WASHINGTON (MarketWatch) - The U.S. added 157,000 new jobs in July to nudge the unemployment rate below 4% again in another solid showing for a surging economy. The increase was below the 194,000 MarketWatch estimate, but hiring in June and May was stronger than previously reported. The unemployment rate, meanwhile, dipped to 3.9% from 4%. The average wage paid to American workers rose by 7 cents, or 0.3%, to $27.05 an hour. The yearly rate of pay increases was unchanged at 2.7%. Employment gains for June and May were revised up by a combined 59,000, the Labor Department said Friday. The government said 248,000 new jobs were created in June instead of 213,000. May's increase was raised to 268,000 from 244,000.