5 things to look for when selecting an ophthalmologist Sponsored Stories Former Arizona Rep. Don Shooter shows health improvement Arizona families, Arizona farms: providing the local community with responsibly produced dairy Top Stories Comments Share WASHINGTON (AP) — Average long-term U.S. mortgage rates are up this week to the highest level since mid-March.Mortgage giant Freddie Mac said Thursday that the national average for a 30-year fixed-rate mortgage rose to 3.80 percent this week from 3.68 percent a week earlier.The rate on 15-year fixed-rate mortgages averaged 3.02 percent, up from 2.94 percent and the first time it’s topped 3 percent since it hit 3.06 percent in mid-March. New Valley school lets students pick career-path academies The difference between men and women when it comes to pain Milstead says best way to stop wrong-way incidents is driving sober Ex-FBI agent details raid on Phoenix body donation facility A year ago, the average 30-year rate stood at 4.21 percent and the 15-year at 3.32 percent.The 30-year average rate hit a record low 3.31 percent in November 2012. The 15-year average hit bottom at 2.56 percent in May 2013.Len Kiefer, deputy chief economist at Freddie Mac, said U.S. interest rates were driven higher this week in part by news the U.S. trade deficit hit a seven-year high in March.To calculate average mortgage rates, Freddie Mac surveys lenders across the country at the beginning of each week. The average doesn’t include extra fees, known as points, which most borrowers must pay to get the lowest rates. One point equals 1 percent of the loan amount.The average fee for a 30-year mortgage was 0.6 point this week, unchanged from last week. The average fee for a 15-year mortgage also remained at 0.6 point.The average rate on a five-year adjustable-rate mortgage increased to 2.90 percent from 2.85 percent last week, but the fee fell to 0.4 point from 0.5 point. For a one-year ARM, the average rate slid to 2.46 percent from 2.49 percent last week; the fee was unchanged at 0.4 point.Copyright © The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.