NEW YORK (CNN/Money) - Mortgage rates are marching higher, with the average rate for a 30-year fixed mortgage rising to 6.48 percent for the week ended May 18, up from 6.4 percent last week.

The benchmark mortgage rate stood at 6.03 percent roughly one month ago, according to Informa Research Services, and had a range of 5.21 to 7.13 percent for the week ended May 18.

The average 15-year fixed mortgage rate jumped to a 5.82 percent average, from 5.72 percent the previous week, with a range of 4.69 to 6.99 percent. Rates stood at 5.36 percent a month earlier.

Weekly rates information • Banking rates: Two up, one down • Mortgage rates rise • Credit card rates stand still

Adjustable rate mortgages (ARMs) also picked up some steam, rising to a 4.51 percent average from 4.34 percent last week. ARM rates stood at 4.14 percent a month earlier.

Below are the rates for three key mortgage products from five top national mortgage lenders. You can compare rates from more institutions with the rate-search tools above.

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