Jim Williams and Mai Martinez

CBS-owned WBBM-Channel 2 will add three hours of local news on weekends this fall, including the expansion of its 10 p.m. newscast to one hour.

Jim Williams and Mai Martinez, currently seen at 5 and 10 p.m. Saturdays and at 5:30 and 10 p.m. Sundays, will anchor the hourlong weekend newscasts at 10 p.m., starting September 13.

At the same time, CBS 2 will add one hour to its Saturday and Sunday morning news blocks. Local news will air from 5 to 6 a.m. and from 8 to 9 a.m. Saturdays (with “CBS This Morning: Saturday” in between from 6 to 8 a.m.), and from 5 to 8 a.m. Sundays (followed by “CBS News Sunday Morning” from 8 to 9:30 a.m.).

Marissa Bailey

Marissa Bailey will continue to anchor weekend mornings, with Ed Curran on weather.

“Local news is becoming more important on the weekends,” Marty Wilke, president and general manager of CBS 2, said in a statement Tuesday.  “By adding three additional hours of news, we will have more time to tell our viewers what’s happening in and around Chicago.”

Coinciding with the move, CBS 2 will air syndicated reruns of two network dramas following the expanded late newscasts. Back-to-back episodes of “The Good Wife” will air from 11 p.m. to 1 a.m. Saturdays, and back-to-back episodes of “Blue Bloods”will air fro 11 p.m. to 1 a.m. Sundays.

“‘The Good Wife’ and ‘Blue Bloods’ are two of the most-watched shows on CBS, which ranks No. 1 in primetime in Chicago,” Wilke said. “By expanding our news and giving viewers another chance to see encore episodes of these popular shows, we look forward to tapping into the growing market of viewers who watch television on the weekends.”