Cannabis Laws in Wisconsin

Current legal status

Wisconsin has not legalized cannabis for adult recreational use or for a broad medical program. Cannabis (THC) remains a Schedule I controlled substance under Wisconsin Statute § 961.14 ^[1]. Possession of any amount is a criminal offense — a misdemeanor on a first conviction, and a Class I felony on any subsequent conviction ^[2].

The state allows possession and use of cannabidiol (CBD) oil under 2017 Wisconsin Act 4 (sometimes called 'Lydia's Law'), but only in a form without psychoactive effect and originally tied to a physician's certification ^[3]. Industrial hemp and hemp-derived products containing no more than 0.3% delta-9 THC by dry weight are legal under both state law and the federal 2018 Farm Bill ^[4].

This article is informational and is not legal advice. Laws change; consult a Wisconsin-licensed attorney for advice on your situation. Information last verified June 2024.

Penalties for possession, sale, and cultivation

Wisconsin's penalty structure is unusual because it has no statutory threshold separating 'personal use' from larger amounts at the first-offense level — any possession is criminal ^[2].

• First-offense possession (any amount): Misdemeanor; up to 6 months in jail and a $1,000 fine.
• Second or subsequent possession: Class I felony; up to 3 years and 6 months in prison and a $10,000 fine.
• Manufacture, distribution, or delivery: Penalties scale by weight, from a Class I felony (≤200 g) up to a Class E felony (>10,000 g), with prison terms up to 15 years ^[5].
• Possession with intent to distribute: Treated under the same weight-based schedule as distribution.
• Paraphernalia: Misdemeanor; up to 30 days jail and a $500 fine.

Cultivating any number of plants is treated as manufacture and prosecuted by plant count or weight, not as a separate 'home grow' category ^[5]. Driving with any detectable THC in your blood is a separate offense under Wisconsin's OWI (operating while intoxicated) statute ^[6].

Local decriminalization ordinances

Several Wisconsin municipalities have passed ordinances reducing the local penalty for small-amount possession to a civil fine, including Milwaukee, Madison, Eau Claire, La Crosse, Kenosha, Racine, and others ^[7]. However, these ordinances do not override state law. Local police generally have discretion to cite under the municipal ordinance or refer the case for state prosecution, and county sheriffs and state troopers are not bound by city ordinances at all ^[7]. In practice, enforcement varies sharply by jurisdiction. Strong evidence

Dane County and Milwaukee County district attorneys have publicly stated they will not prosecute small possession cases as a matter of policy, but this is prosecutorial discretion — not legalization, and a future DA could change course ^[8].

Medical cannabis and CBD

Wisconsin does not have a functional medical cannabis program. Multiple medical legalization bills have been introduced — including a Republican-sponsored proposal in 2024 that would have created a tightly limited, state-run dispensary system — but none have passed both chambers ^[9].

Under 2017 Act 4, a person may possess CBD oil 'in a form without a psychoactive effect' for treatment of a medical condition if they have a certification from a physician ^[3]. The statute does not establish in-state production or dispensing, so patients typically obtain products from out-of-state or hemp-derived sources.

Hemp-derived CBD products containing ≤0.3% delta-9 THC are broadly available in retail stores. Hemp-derived delta-8 THC and converted delta-9 THC products sit in a legal gray area: Wisconsin has not explicitly banned them, and they are sold openly, but their legal status under federal law and future state regulation is unsettled ^[10]. Disputed

Travel, employment, and firearms

Crossing into Wisconsin with cannabis legally purchased in Illinois, Michigan, or Minnesota does not make it legal in Wisconsin. Once you cross the state line, Wisconsin possession law applies, and transporting across state lines is also a federal offense ^[11].

Wisconsin is an at-will employment state with no statutory protections for off-duty cannabis use, even for hemp-derived products that can trigger a positive THC drug test. Employers can fire or refuse to hire on the basis of a positive test ^[12].

Under federal law (18 U.S.C. § 922(g)(3)), any user of a controlled substance — including state-legal cannabis users — is prohibited from possessing firearms or ammunition. Wisconsin's concealed-carry licensing is administered under state law, but ATF Form 4473 still asks about marijuana use ^[13].

Reform efforts and what's likely next

Public polling has consistently shown majority support in Wisconsin for both medical and adult-use legalization. A 2022 Marquette Law School Poll found 64% of Wisconsin adults support full legalization and 80% support medical legalization ^[14]. Sixteen advisory referenda placed on county and municipal ballots in 2018 all passed, some by large margins ^[14].

Despite this, legalization bills have repeatedly failed in the Republican-controlled legislature. Governor Tony Evers has included recreational legalization in multiple proposed state budgets; the legislature has stripped it each time ^[9]. A 2024 Senate Republican medical-only proposal also stalled.

Wisconsin does not allow citizen-initiated ballot measures, so reform must come through the legislature. Given the political dynamics and surrounding-state competition for tax revenue, incremental medical reform is more plausible than near-term adult-use legalization — but neither is guaranteed. Weak / limited

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