"His personality is certainly starting to come back as well," spokesman Lewis Kay said.
The 45-year-old former "Saturday Night Live" and "30 Rock" star suffered broken ribs and a broken leg in the June 7 crash on the New Jersey Turnpike. The crash killed fellow comedian James McNair and seriously injured two other people.
Prosecutors say Wal-Mart driver Kevin Roper's truck hit Morgan's limo. The Jonesboro, Georgia, resident has pleaded not guilty to death by auto and assault by auto charges.
A criminal complaint alleges Roper hadn't slept for more than 24 hours before the accident when he swerved to avoid slowed traffic on the turnpike and plowed into Morgan's limo.
Wal-Mart Stores Inc., based in Bentonville, Arkansas, has not explained what Roper's driving route was. It has said it believes he was in compliance with federal safety regulations.
Morgan's assistant, Jeffrey Millea, of Shelton, Connecticut, has also been upgraded to fair condition, Kay said. Hospital officials said comedian Ardie Fuqua, of Jersey City, remains in critical condition.