Rate Tracking Tools
To determine if the 5yr Fixed Rate could potentially increase or decrease simply track the Govt. of Canada benchmark 5yr Bond Yield trend. If you see a 5-7 day trend of increases or decreases to the yield, the likely result will be a increase or decrease to the 5yr Fixed Rate by the Banks.
REMEMBER: this is not an exact science and does not always hold true. However, it will allow you to at least obtain a sense of when and where Fixed Rates are headed in the short term.