Rates fall to the lowest level in decades Mortgage rates fell to the lowest level in decades for the ninth time in 10 weeks, as concerns grow that the economy is weakening. Mortgage buyer Freddie Mac said Thursday that the average rate for a 30-year fixed loan was 4.36 percent this week, down from 4.42 percent last week. That's the lowest since Freddie Mac began tracking rates in 1971.

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