Normally Nov 5
That is the whole estimate, and it is the weather rather than a resort. No opening date for any resort here is on file yet, so there is nothing to project from. The chart and the tiles below are the same ones the Minnesota page runs on, taken at Traverse City, Cadillac and Brighton instead of at resorts. The curve is Traverse City.
Snow guns need a wet-bulb temperature under 28°F. The mean at Traverse City does not get there until Dec 6, but the first workable window normally arrives on Nov 17. Resorts open on those early cold snaps rather than on the average.
No snowmaking weather in the next 16 days. The coldest any of these gets is 52.8° at Cadillac.
55.9°
Coldest wet bulb the 16-day forecast reaches at Traverse City.
52.8°
Coldest wet bulb the 16-day forecast reaches at Cadillac.
54.2°
Coldest wet bulb the 16-day forecast reaches at Brighton.
Wet-bulb forecast from Open-Meteo, updated twice a day. Guns can run under 28°.
We need somebody to help find opening dates, closing dates, and where the two can be told apart, the pre-season opening versus the full one. That mostly means trolling their Facebook feeds by hand. Sometimes the websites have it. Minnesota shows what a region looks like once it is filled in.
20 resorts in this region, none with dates on file yet. From the Midwest Ski Resort Guide by Midwest Skiers.
If you know Michigan · Lower Peninsula resorts, or want to take on the whole state, that is the whole job. Email eazydp@gmail.com. Dates for resorts already listed are just as welcome.