EDIT: Instead of maintaining the list in this thread, I'm going to recommend checking out this calendar: http://kansascitybeer.com/2016-festivals/
Feb 11: The Big Chill (75th Street Brewery)
Feb 27: KC Beer Fest (Union Station)
Mar 04: That Dam Beer Fest (Lawrence)
Mar 05: KS Craft Brewers Expo (Lawrence)
Mar 12: Blarney Brew Off (Lee's Summit) Homebrew Event
Apr 02: Kegs 'n' Eggs (Ren Fest grounds - Bonner Springs, KS)
Apr 30: Parkville Microbrew Fest
May 07: KC On Tap (Berkeley Waterfront)
May 21 Hopfest (Waldo)
May 21 2016 Briar Fest
Jun 11: Westport Summer Beer Fest
Jun 18: Boulevardia Taps & Tastes
July 30: KC Nanobrew Fest (Berkley RiverFront Park) Homebrew Event
Aug 06: Pitch Steer & Beer Festival
Aug 13: Zona Rosa
Sep 17: Festival of the Lost Township (Raytown)
Sep 24: High Plains Brewhoff (Downtown OP) Homebrew Event
Nov 12: Strong Ale Fest