If you are wondering in which states medical marijuana is legal, here is a rundown of those that may or may not have medical marijuana reciprocity legislation but will honor your out-of-state card. So, where are medical marijuana cards valid? 

You can enjoy the benefits of medical marijuana in:

• Alaska: No out-of-state medicinal marijuana registrations get accepted in Alaska. In contrast, buying up to an ounce of cannabis for recreational use is legal.
• Arizona: Only “visiting qualifying patients” can receive limited reciprocity in Arizona.
• Arkansas: People with a valid prescription and identification card from another state can legally purchase medical marijuana in Arkansas once they complete a visiting patient form and bring their credentials.
• California: Anyone over 21 with a valid government-issued ID can purchase cannabis for recreational or medical use. 
• Colorado: In the same way Californians over 21 can legally purchase cannabis, so can visitors who can prove their age with official documentation.
• Illinois: Although the state does not permit medical marijuana reciprocity, recreational cannabis use is allowed in Illinois.
• Washington, D.C.: Only states with a similarly effective medical marijuana program get accepted for reciprocity in Washington, DC.
• Maine: With valid identification, medical marijuana patients from specific states can shop at any of Maine’s medical dispensaries.
• Massachusetts: Any resident of Massachusetts over the age of 21 may purchase, possess, and consume cannabis for either medicinal or recreational usage.
• Michigan: The dispensaries in Michigan can accept medicinal marijuana cards from other states.
• Montana: Montana allows out-of-state medical cardholders to possess and consume marijuana when visiting.
• Nevada: In 2000, Nevada legalized medical marijuana, and since then, it has maintained full reciprocity with every other state.
• New Hampshire: In New Hampshire, out-of-state medical marijuana patients can have up to two ounces but cannot buy from local dispensaries.
• Oklahoma: With a valid temporary license, medical marijuana patients from other states can shop at dispensaries in the Sooner State.
• Oregon: While the state does not accept out-of-state medical marijuana cards, recreational marijuana use gets permitted in Oregon.
• Rhode Island: Dispensaries are open to out-of-state patients who provide valid medical marijuana cards and government-issued ID cards from their home state.
• Vermont: Vermont approved recreational cannabis in 2018, allowing individuals over 21 to carry up to an ounce of marijuana.
• Utah: Utah requires patients to satisfy one of its qualifying conditions to extend reciprocity.
• Washington: All adults over 21 can buy recreational cannabis in Washington state.