Bostic spoke with Reuters

Bostic told Reuters he came into the year thinking the Fed should hike only two times this year but has shifted to three as he's grown more confident in the economy.

"I'm pretty firmly a three right now," Bostic told Reuters in an interview on the sidelines of the Hoover Institution's annual monetary policy conference, referring to the total number of rate hikes he expects the Fed to deliver this year (one has already been delivered). "I'm open to going either direction, going back to two (rate hikes) or going to four, depending on what the data show."

Overall, he was upbeat.

"You look at the way the economy is functioning and it is pretty rosy," he said. "There's still a lot of stimulus from the tax overhaul, the fiscal package is still feeling its way through the economy and so there's a lot of upside potential that's out there."