You want more blasts of cold air? I think you came to the right place. The pattern will favor a number of cold fronts with air coming south from Canada through at least mid month and possibly beyond.
What about rain? Believe it or not, this is typically the wettest month of year according to the 30 year average. It's not by much, but it's wetter than April! We'll have rain Thursday, but beyond that, rainfall looks average to below average for a while.
Below is a bird eye view of the northern hemisphere looking directly down. I want you to notice the reds showing up through the far eastern Pacific ocean northward into Alaska. These are positive height anomalies and shows you where ridging sets up. When a ridge sets up in this portion of the world, it dumps cold air into the central and eastern United States. Look at the blues! Those are negative height anomalies and shows you where troughing is setting up.