Wisconsin cannabis history
Reviewed
For a first conviction, possession of tetrahydrocannabinols may be punished by a fine of not more than $1,000 or imprisonment of not more than 6 months, or both. A second or subsequent offense is a Class I felony. The Legislature says the statutes are updated through 2025 Wisconsin Act 247 and orders in effect on October 1, 2026.
This is a short history, not legal advice. The rules that apply today are on the Wisconsin cannabis laws page. A date is included only when the linked page states it.
At a glance
October 1, 2026That is the currency line on the statute page, not a legalization date.
No program citedNo enacted medical-cannabis program or statewide decriminalization statute was the page used here. The possession penalty above is section 961.41(3g).
Section 961.41(3g)
- The history note printed on the following section begins in 1971. It is not a statement that the current tetrahydrocannabinol penalty was enacted then.
Sources
Citations were checked against the linked pages on October 24, 2026. Claims without a statute, election result, regulator page, court opinion, or news report were left out.