The weekly average rate borrowers were quoted on Zillow for thirty-year mortgages rose last week to 5.12 percent, up from 4.96 percent the week prior, according to the Zillow Mortgage Rate Monitor, compiled by leading real estate Web site Zillow.com®.

Meanwhile, rates for 15-year fixed mortgages increased to 4.92 percent, up from 4.72 percent and 5-1 adjustable rate mortgages increased to 5.27 percent from 5.22 percent.

Rates for 30-year fixed purchase mortgages had fallen by Monday evening, with the average rate on Zillow Mortgage Marketplace at 4.97 percent.

At a state level, the 30-year fixed mortgage rate in Michigan had the biggest increase, rising from 5.00 percent to 5.34 percent. Rates on 30-year fixed mortgages were lowest in the states of Georgia (5.03%) and Florida (5.03%), while Michigan (5.34%) and Tennessee (5.32%) had the highest rates.