Following Newcastle's 2-0 Premier League win over Crystal Palace on Sunday, Willock shared a screenshot showing a series of abhorrent private messages he received from a social media user after the game.
In response, to the messages, Willock wrote: "I pray you and your family find God. And may him have mercy on you."
After the club released a statement yesterday, condemning the abuse, Howe has responded in Tuesday’s press conference as he stands by the England midfielder.
"It's absolutely horrible. I really felt for Joe, to have to read that and absorb the words that were sent to him. Just his reaction, again, I thought was first-class.
"It's such a shame that any football player or any sportsman or any individual has to read those words, and I can't support him enough and give him love at this moment."
Willock was targeted on the same social media platform following a 2-1 defeat against Fulham in February last year, and the club has since called for social media to take action and reveal the identities of the individuals.
Meta is understood to be in direct contact with the club and stressed "no-one should be subjected to racist abuse".
"Sending messages like this is against our rules," a spokesperson for the American multinational technology company said.
"No one thing will stop this behaviour overnight, but we will be taking appropriate action and will work to help protect our community from abuse and support police investigations."