The most useful verified facts are that Sleeping Bear Dunes charges $25 per private vehicle for seven days, Mackinac Island ferries cost $37–$39 for an adult round trip plus a $3 online fee, and hotel rooms carry a 6% state use tax. NOAA's normal highs at Detroit Metropolitan Airport run from 32.3°F in January to 83.7°F in July. We verified no driving times or flight prices.
Quick plan (our recommendation)
This is an editorial plan from official sources, not a trip we took. See the weekend itinerary for a short version.
- Detroit: the Detroit Institute of Arts and the Motown Museum.
- Sleeping Bear Dunes or Mackinac Island: buy the park pass or the ferry ticket.
What it costs (verified figures only)
| Item | Figure | Notes |
|---|---|---|
| Sleeping Bear Dunes | $25 per private vehicle, 1–7 days | Annual pass $45. Source: NPS (via search summary). |
| Mackinac Island ferry | Adult round trip $37 (Arnold) or $39 (Shepler's) | Plus a $3 online fee. Source: Crain's Detroit (via search summary). |
| SMART Bus | $2.00 general fare | Source: SMART. |
| Michigan hotel use tax | 6% | Source: Michigan Treasury (via search summary). |
Getting around
We verified only SMART in the Detroit area; see transportation.
When to go
NOAA's 1991–2020 normals for Detroit Metropolitan Airport show highs of 79.7–83.7°F from June to August and 32.3–37.2°F in December–February, with up to 14.0 inches of snow in a month. May is the wettest month at 3.72 inches; see the best-time guide.
Safety and practical tips
In summer see National Weather Service heat guidance and use broad-spectrum SPF 30 or higher sunscreen (American Academy of Dermatology). This guide publishes no crime or safety statistics.
What this guide does not cover
We do not rate hotels, restaurants, tours or stores, or claim first-hand visits; see the editorial policy.