Are the "average" rates quoted by a lender or Mortgage News Daily actually representative of what I'd get?

Rate averages are good for tracking the trend and useless as a personal quote. Every published average (the Mortgage News Daily index, the weekly survey figures, a lender's advertised rate) blends thousands of files with different credit scores, down payments, loan types, and points paid. Your rate gets priced off your specific file. That is also why you cannot pull a rate sheet online and comparison-shop from it. Consumer retail rate sheets are not published anywhere. The only rate sheets in circulation are wholesale ones built for brokers, and even those take industry experience to read and calculate correctly. Under the hood, the 30-year fixed roughly tracks the 10-year Treasury yield plus a spread. Historically that spread has run around 1.7 points. It widens when mortgage-bond investors worry about getting repaid early (if they expect rates to fall and borrowers to refinance, they will pay less for those bonds today), and it carries an extra premium when rates are volatile. It compresses again once rates settle, though it moves slowly and nobody can promise the timing or the direction. For following the trend, use the Mortgage News Daily rate table, right here on our site. For a number you can actually plan around, get quoted on your real profile. That is what the free Roadmap conversation is for: about 20 minutes where we run your real numbers and show you the rate and cost you would genuinely be offered.