Washington's average 30-year mortgage rate rose to 7.125%, up 0.297 points in the past week and 0.668 points over 90 days. The average 30-year fixed refinance rate increased to 7.188%, up 0.31 points weekly and 0.668 points over 90 days. Rates have trended upward recently, influenced by economic factors. To secure the best rates, compare lenders, maintain a strong credit score, and consider a substantial down payment.