The ban was originally set to expire Jan. 16.
The restrictions limit gatherings to 25 people outdoors and 10 people indoors.
The announcement comes after in-person undergraduate instruction was delayed by two weeks.
In-store retail shopping will also be allowed to resume.
Individual counties will decide when certain restrictions will be lifted.
A campus task force is providing recommendations on how research should return to campus.
An application process is being developed for researchers who want to continue their work on-campus.