Cannabis Laws in Wyoming: What You Need to Know

Wyoming remains one of the most restrictive cannabis states in the country — no medical program, no recreational framework, and no meaningful decriminalization. Home cultivation is illegal in Wyoming under all circumstances, and even simple possession carries penalties among the toughest in the western United States.

Is Cannabis Legal in Wyoming?

No. Marijuana is fully illegal in Wyoming for both medical and recreational purposes. The only narrow exception is a 2015 law, House Bill 32, which permits low-THC, high-CBD hemp extract for patients with intractable epilepsy who hold a state-issued Hemp Extract Identification Card — but no dispensing framework exists, so there's no legal in-state way to actually purchase it. Wyoming's penalties are unusually harsh: possession of more than 3 ounces jumps directly to a felony, any amount of concentrate over 0.3 grams is a felony, and Wyoming is one of only a handful of states that separately criminalizes simply being under the influence of marijuana, even without any cannabis found on you.

Home Cultivation Is a Criminal Offense

Cultivating any number of marijuana plants in Wyoming is a misdemeanor carrying up to 6 months in jail and a $10,000 fine — and larger grows can be charged under separate sale and distribution statutes with significantly harsher penalties.

Where Things Stand in 2026

Wyoming's legislature has not advanced any cannabis reform legislation through the 2023, 2024, 2025, or 2026 sessions, and no Wyoming city has decriminalized possession locally. The state's prohibition framework has remained essentially unchanged since 2015. Wyoming sits between two legal states — Colorado to the south and Montana to the north — and law enforcement along I-25 and I-80 is well aware that travelers sometimes carry cannabis purchased legally elsewhere; doing so remains a Wyoming law violation the moment you cross the border, regardless of where it was purchased.

This page is for informational purposes only and is not legal advice. Cannabis laws change, and enforcement can vary. If you have questions about your specific situation, consult a licensed attorney in Wyoming.