It expires Tuesday.
He's expected to stay on the job until Mayor Daley leaves office in May.
Mayor-elect Rahm Emanuel said during the campaign that he would not renew Weis' contract. Weis took the job with Chicago police nearly three years ago after 23 years with the FBI.
He's been under fire from some rank-and-file officers who view him as an outsider who's hurt morale.
Weis notes that crime is at record lows under his leadership.
The Associated Press contributed to this report.