Police found the drugs and weapons during a raid at PDH Industrial Estate in Watery Lane, Wednesfield, just after 7am on Monday.
A large quantity of cannabis was found and seized alongside a stolen van, suspected stolen car parts and a number of offensive weapons, including machetes and three air rifles.
No arrests have been made and enquiries continue, West Midlands Police said.
Anyone with information is asked to contact West Midlands Police via Live Chat or call 101 anytime.
Crimestoppers can be called anonymously on 0800 555 111 quoting log 636 of June 22.