Manitoba Weather Centre 2020 Monthly Calendar. Many of you purchased our 2019 Calendar and the public supported it so MWC is back again with even better images for our 2020 Calendar! Want to win this calendar? Simply comment on this post! Make sure your user profile is complete with your correct shipping information, name and contact email. PS: this calendar will be fulfilled by Manitoba Weather Centre . You may contact them directly via their website HERE if you wish to purchase their calendars.