State Fireworks Law Directory
The State Fireworks Law Directory from the American Pyrotechnics Association is a great fireworks law resource for people located in the United States.
Michigan Fireworks Law
The Michigan Fireworks Safety Act of 2011 (MCL 28.451), changed Michigan's fireworks law to allow the purchase and use of all types of consumer fireworks. The use of bottle rockets, roman candles, firecrackers, aerial shells or mortars, multi-shot repeaters and other types of consumer fireworks is legal in Michigan.
The Fireworks Safety Act allows local units of government to limit days and hours of use, with some exceptions. Captain Boom gets a lot of questions about this part of the law, so here is the relevant language taken from MCL 28.457 Section 7:
(2) A local unit of government may enact an ordinance regulating the ignition, discharge, and use of consumer fireworks, including, but not limited to, an ordinance prescribing the hours of the day or night during which a person may ignite, discharge, or use consumer fireworks. If a local unit of government enacts an ordinance under this subsection, the ordinance shall not regulate the ignition, discharge, or use of consumer fireworks on the following days after 11 a.m.:
(a) December 31 until 1 a.m. on January 1.
(b) The Saturday and Sunday immediately preceding Memorial Day until 11:45 p.m. on each of those days.
(c) June 29 to July 4 until 11:45 p.m. on each of those days.
(d) July 5, if that date is a Friday or Saturday, until 11:45 p.m.
(e) The Saturday and Sunday immediately preceding Labor Day until 11:45 p.m. on each of those days.
What does this mean?
It means you can shoot consumer fireworks in Michigan in accordance with law any day of the year unless your local government has restricted fireworks use. Most large cities in Michigan and many other cities, villages, or townships have implemented use restrictions, which means you have to check your local ordinances to find out what the rules are. The only way to know for sure is to read your local ordinance.