Possession
1 oz (28 g)
Is weed legal in Montana?
Yes.
Weed is legal in Montana for adults 21+. Updated October 2026.
Tourists
Visitors to Montana are generally subject to the same recreational cannabis rules as residents. Crossing a border with it remains a separate, usually prohibited, act.
Age
21+
Home grow
yes (four plants)
Year changed
2021
Recreational cannabis is legal for adults 21+ in Montana; legal to possess up to 1 oz (28 g) & 8 g of concentrates.
The recorded ruling
WhereItsLegal indexes weed in Montana as legal. Recreational cannabis is legal for adults 21+ in Montana; legal to possess up to 1 oz (28 g) & 8 g of concentrates.
The recorded possession limit for weed in Montana is 1 oz (28 g).
The legal age attached to this ruling is 21. Anyone younger is outside the recorded permission, even where adult use is legal.
Home cultivation is recorded as: yes (four plants).
Visitors to Montana are generally subject to the same recreational cannabis rules as residents. Crossing a border with it remains a separate, usually prohibited, act.
The last recorded status change year is 2021.
Laws move. The last verified date on this ruling is 2026-10-19. Always read the linked source and local statute before acting.
Long-tail notes
Law timeline
- 2021-01-01
Last recorded change to this legal status.
How Montana compares nearby
Frequently asked
Is weed legal in Montana?+
Yes — weed is legal in Montana for adults 21+.
Is weed legal everywhere in Montana?+
The recorded status for Montana as a whole is legal. Local bylaws can still add conditions.
What is the legal age for weed in Montana?+
The recorded minimum age is 21.
How much weed can you possess in Montana?+
The recorded possession limit is 1 oz (28 g).
Can tourists use weed in Montana?+
Visitors to Montana are generally subject to the same recreational cannabis rules as residents. Crossing a border with it remains a separate, usually prohibited, act.
Can you grow weed at home in Montana?+
Home cultivation is recorded as: yes (four plants).
When was this Montana weed ruling last verified?+
Last verified 2026-10-19, with a recorded law date of 2021-01-01.
Can you fly with weed into Montana?+
Domestic legality in Montana does not make it legal to carry weed across an international border. Border rules are separate and typically prohibit it.
People also ask
Also in Montana
Not legal advice. This page is generated from a typed dataset. If a fact is missing, the section is omitted rather than guessed. Methodology.