California Cannabis Laws Marijuana laws in California span from state level statutes to municipal ordinances and regulations. California decriminalized the possession of 28.5 grams (1 ounce) or less of marijuana. H&S Code 11357b labels simple possession as an infraction; such non-criminal offenses are punishable by a fine not to exceed $100. Possession of more than an ounce qualifies as a misdemeanor, so offenders are subject to up to six months... Read more »