Marijuana is not legal in Wisconsin. The state has no recreational market, no functioning medical marijuana program, and a first possession offense is a misdemeanor carrying up to six months in jail and a $1,000 fine. A second offense is a felony. A handful of hemp-derived products sit in a legal gray area, and some cities have softened enforcement for small amounts, but state law still applies statewide and the consequences reach into driving, employment, and housing.
Recreational Use Is a Crime
Possessing, selling, growing, or using cannabis for non-medical purposes is a criminal offense under Wisconsin law, regardless of what neighboring states allow. Illinois and Michigan both run legal adult-use markets. Bringing product purchased there back across the state line exposes you to the same criminal penalties as buying it on the street in Milwaukee.
Legalization bills have been introduced repeatedly, but Republican legislative leadership has consistently blocked them. As of 2026, no bill has made it out of committee.
Medical Marijuana Is Not Available
Wisconsin does not have a medical marijuana program in any meaningful sense. You cannot legally obtain marijuana flower, edibles, or high-THC concentrates through a physician, no matter your condition.
What the state does allow is narrow. Under a 2017 law, a physician licensed by the Medical Examining Board can certify a patient to possess cannabidiol (CBD) to treat any medical condition, as long as the CBD is in a form without a psychoactive effect. That replaced an earlier law limited to seizure disorders.1Wisconsin State Legislature. 2017 Wisconsin Act 4 Possession of Cannabidiol (CBD) In practice this means very low-THC CBD oil, nothing like the products sold in states with genuine medical programs.
Separately, CBD derived from hemp containing no more than 0.3% delta-9 THC is legal for anyone to buy and possess without any certification. Those products are widely stocked in retail shops and gas stations.
An out-of-state medical card offers you no protection here. A valid card from Illinois, Michigan, or anywhere else does not shield you from Wisconsin’s criminal penalties.
The Hemp Loophole: Delta-8, THC-O, and THCA
This is where Wisconsin law gets confusing in practice. State law defines “hemp” as cannabis with no more than 0.3% delta-9 THC on a dry-weight basis, and it exempts hemp from the controlled substances statutes.2Wisconsin State Legislature. Amendment Memo 2025 Senate Bill 682 Senate Amendment 1 Because the cap applies only to delta-9 THC, products containing other intoxicating cannabinoids like delta-8 THC, THC-O, and HHC are sold openly across the state.
THCA flower exploits the same gap. THCA is not psychoactive raw, so hemp flower testing under 0.3% delta-9 THC qualifies as legal hemp, but when you smoke or heat it, THCA converts to regular THC and produces the same high as marijuana. These products are on shelves right now.
Two changes are coming. A pending Wisconsin bill (2025 Senate Bill 682) would set a minimum purchase age of 21, mandatory testing, labeling requirements, and potency caps for hemp-derived cannabinoid edibles and beverages.2Wisconsin State Legislature. Amendment Memo 2025 Senate Bill 682 Senate Amendment 1 More consequentially, a federal change taking effect November 12, 2026 redefines “hemp” using total THC concentration rather than just delta-9. That would effectively ban THCA flower and many higher-potency hemp products currently on shelves. How Wisconsin responds is an open question.
Possession Penalties
Wisconsin draws a sharp line between first-time and repeat offenders for simple possession.
A first offense of possessing any amount of marijuana is a misdemeanor punishable by up to six months in jail and a fine of up to $1,000.3Wisconsin State Legislature. Wisconsin Code 961.41 – Possession, Manufacture, Delivery, or Trafficking of Controlled Substances
A second or subsequent possession charge is a Class I felony, carrying up to three and a half years in prison and a fine of up to $10,000.3Wisconsin State Legislature. Wisconsin Code 961.41 – Possession, Manufacture, Delivery, or Trafficking of Controlled Substances4Wisconsin State Legislature. Wisconsin Statutes 939.50 – Classification of Felonies The prior conviction that triggers the felony enhancement does not have to be for marijuana. Any prior drug offense under Wisconsin law, federal law, or the law of any other state counts, including a minor misdemeanor from years earlier in another state.
Sale and Cultivation
Selling, delivering, or manufacturing marijuana is always a felony in Wisconsin, and cultivation is prosecuted under the same statute as distribution. Severity climbs with weight or plant count.3Wisconsin State Legislature. Wisconsin Code 961.41 – Possession, Manufacture, Delivery, or Trafficking of Controlled Substances
- 200 grams or less, or 4 or fewer plants: Class I felony, up to 3.5 years in prison and a $10,000 fine.
- More than 200 grams to 1,000 grams, or 5 to 20 plants: Class H felony, up to 6 years and a $10,000 fine.
- More than 1,000 grams to 2,500 grams, or 21 to 50 plants: Class G felony, up to 10 years and a $25,000 fine.
- More than 2,500 grams to 10,000 grams, or 51 to 200 plants: Class F felony, up to 12.5 years and a $25,000 fine.
- More than 10,000 grams, or more than 200 plants: Class E felony, up to 15 years and a $50,000 fine.4Wisconsin State Legislature. Wisconsin Statutes 939.50 – Classification of Felonies
A home grow crosses tiers quickly. Four plants sits at the lowest felony level; five plants pushes you into a Class H felony with a six-year exposure.
Distributing or possessing with intent to deliver within 1,000 feet of certain protected locations adds five years to the maximum prison sentence on top of the base penalty. Protected locations include schools, public parks, jails, public housing projects, youth or community centers, public swimming pools, and school buses. The enhancement applies to delivery and possession with intent to deliver, not to simple possession.
Local Decriminalization Does Not Override State Law
Dozens of Wisconsin cities and counties have passed ordinances treating minor possession as a civil violation. Madison imposes no penalty for possessing up to 28 grams on public or private property, with ordinance violations carrying a $1 fine. Green Bay treats possession of up to 28 grams as a civil matter with fines from $1 to $500.5NORML. Wisconsin Local Decriminalization
Here’s the catch. A city officer might write a ticket under local ordinance, but a county sheriff’s deputy or a state trooper standing on the same corner can arrest you under the state statute. Prosecutors keep discretion to file state charges in a decriminalized city. Local ordinances reduce the odds of a harsh outcome for a small amount; they do not eliminate the legal risk.
Driving With THC in Your System
Wisconsin applies a zero-tolerance rule. It is illegal to operate a motor vehicle with any detectable amount of delta-9 THC in your blood, regardless of whether you feel impaired and regardless of when you last used.6Wisconsin State Legislature. Wisconsin Code 346.63 – Operating Under Influence of Intoxicant or Other Drug Because THC can remain detectable in blood for days or weeks after use, regular users face OWI exposure even while completely sober.
A first OWI is a civil forfeiture rather than a criminal charge, with the forfeiture ranging from $150 to $300, plus a $435 OWI surcharge and court costs. License revocation runs six to nine months. Second and later OWI offenses are criminal, and penalties climb sharply with each conviction.7Wisconsin Department of Transportation. OWI and Related Alcohol and Drug Offense Penalties
Refusing a blood test carries its own consequences under the implied consent law: automatic license revocation for one year on a first refusal, two years on a second, three years on a third or later refusal, plus a required ignition interlock. Refusal does not stop prosecution; charges can still proceed on other evidence.8Wisconsin State Legislature. An Overview of Wisconsin OWI Law
Employment, Unemployment, and Housing
Wisconsin gives employees no legal protection for marijuana use, even in cities where possession has been decriminalized. Employers can require drug testing as a condition of hiring or continued employment. A positive THC test is grounds for termination, with no exception for off-duty use.
Losing a job for a positive test can also cost you unemployment. Wisconsin law treats a violation of an employer’s written drug and alcohol policy as misconduct, which disqualifies you from unemployment insurance. To requalify after a misconduct discharge, you generally must wait seven weeks and earn wages equal to at least 14 times your weekly benefit amount in new covered employment.9Wisconsin State Legislature. Drug Testing for UI Program
Landlords can prohibit marijuana use in a lease and enforce that term with eviction, since marijuana remains illegal under both state and federal law.
Pending Legalization Efforts
Democratic legislators introduced 2025 Senate Bill 1045, which would legalize possession, create medical and recreational cannabis programs, regulate sales, and provide a process for expunging or adjusting past marijuana convictions.10Wisconsin State Legislature. 2025 Senate Bill 1045 The bill was referred to committee in February 2026. Previous legalization efforts have died without a floor vote, and Republican legislative leaders have not signaled a change in position. Until that shifts, Wisconsin’s marijuana laws remain among the most restrictive in the upper Midwest.