The board meets that day, beginning at 8 a.m., at the Solano County Government Center at 675 Texas St. in Fairfield.
Dozens of medical marijuana facilities opened in Solano County cities after the passage of Proposition 215 by California voters in 1996, but most have gone underground since the federal government enlisted local police departments to launch a crackdown on the clinics.
None of Solano's seven cities have expressly permitted the facilities to open.
The conflict between federal and state law is currently being considered by the courts.
In Vallejo, Solano County's largest city, numerous medical marijuana clinics have been raided, and their property seized and operators arrested.
Solano's seven cities are not subject to the Board of Supervisors moratorium, which applies only to unincorporated communities such as Cordelia and Green Valley.
District 3 Supervisor Jim Spering of Suisun City told the newspaper that the board declined to act at its last meeting because District 2 Supervisor Linda Seifert of Green Valley was unable to attend.