The average rate on 30-year fixed-rate mortgages fell three basis points, the 15-year fixed rate dropped three basis points, too, and the 5/1 ARM climbed three basis points, according to a NerdWallet survey of daily mortgage rates published by national lenders Monday. The 30-year fixed-rate mortgage is three basis points lower than one week ago and 21 basis... More From NerdWallet Calculate your mortgage payment Compare mortgage rates How much home can you afford? Holden Lewis is a writer at NerdWallet.