Years before making the NHL, Weal spent a season playing minor hockey in Saskatchewan with Notre Dame, a program that was a steppingstone to the League for such notable players as Rod Brind'Amour, Brad Richards, Tyler Myers and Jaden Schwartz.
As a 16-year-old Western Hockey League rookie in 2008-09 with Regina, he led all first-year players with 54 assists. In 2009-10, he was third in the WHL with 102 points (35 goals, 67 assists), and then led Canada in scoring with nine points (three goals, six assists) in six games at the 2010 IIHF World Under-18 Championship. The Los Angeles Kings selected him in the third round (No. 70) of the 2010 NHL Draft.