Calendar widgets shipped with devices are usually limited to the number of views you can have -- single day or agenda view are the most common widgets I see. You can download alterantives from the Play Store with month views or better agenda view widgets.
Pure Grid Calendar Widget - Play Store is a good alternative. It's a paid widget ($1.79) and worth it if you rely heavily on this type of calendar widget to keep track of your events.
Also, Simon Sage did a good AC blog post with some of the best Calendar Widgets available. Perhaps something featured is what you are looking for:
The best calendar apps for Android | Android Central