The 18 month CD rate at Astoria Savings Bank was lowered to 0.65 percent with a yield of 0.65 percent. The 18 month CD interest rate was lowered from 0.75 percent with a yield of 0.75 percent. Astoria Bank 18 month certificate of deposit rates have changed many times, see all rate changes here Astoria Savings Bank 18 Month CD Rate.