The tire size for your EX makes the choice a little tricky expecially considering your location ...
I would suggest the new Michelin X-Ice XI2
The X-Ice Xi2 is Michelin's Studless Ice and Snow winter tire developed for the drivers of coupes, sedans and family vans that want to combine enhanced ice and snow traction with predictable wet and dry road handling. The X-Ice Xi2 is designed to tackle the coldest winter driving conditions around the world.
Michelin's FleX-Ice silica-based winter tread rubber compound (offers firmness at higher temperatures for wet and dry road stability while it remains flexible at lower temperatures to enhance packed snow and ice traction) is molded into a directional tread design that helps evacuate water and slush to improve hydroplaning resistance. Independent shoulder and intermediate tread blocks feature a combination of multiple micro-pumps and Cross Z-Sipes to deliver traction on ice- and snow-covered roads. Additionally, the Cross Z-Sipes increase tread and shoulder block stability to provide the lateral and longitudinal stiffness that enhances driving precision on dry and wet roads. The tire's internal structure includes twin steel belts reinforced by a spirally wound nylon to optimize the tire profile while enhancing high-speed capability.