Mackinac Wilderness
- Annual mean
- 5.8 °C
- Warmest month
- August
- Wettest month
- October
Long-term atmospheric averages derived from NASA POWER measurements, 1991 to 2020
Horseshoe Bay Wilderness displays a distinct annual pattern of temperature and precipitation defined by long-term regional climatology. This twelve month profile tracks average minimum, mean, and maximum temperatures alongside data for humidity, wind speed, and daylight duration. Measurements represent a fixed coordinate to illustrate atmospheric trends rather than current weather conditions or site-wide variability.
Long-term thermal progression and average daily precipitation cycles across twelve months of recorded data
Compare long-term monthly normals across temperature bounds, average daily precipitation, and calculated daylight.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | -6.3 °C-16.6° to 2.7° | 1.8 mm/day | 92.3% | 5.4 m/s | 8.9 hours |
| February | -6.3 °C-16.9° to 2.6° | 1.4 mm/day | 91.1% | 5.3 m/s | 10.1 hours |
| March | -2.6 °C-14.1° to 7.7° | 1.7 mm/day | 86.1% | 4.5 m/s | 11.7 hours |
| April | 2.8 °C-5.6° to 13.5° | 2.4 mm/day | 80.8% | 4.1 m/s | 13.3 hours |
| May | 8.2 °C0.3° to 18.7° | 2.4 mm/day | 81.3% | 3.3 m/s | 14.8 hours |
| June | 13.5 °C4.8° to 22.1° | 2.7 mm/day | 83% | 2.9 m/s | 15.5 hours |
| July | 17.6 °C10° to 24.7° | 2.6 mm/day | 82.6% | 3 m/s | 15.1 hours |
| August | 18.3 °C11.5° to 25.2° | 2.5 mm/day | 81.4% | 3.3 m/s | 13.9 hours |
| September | 14.9 °C6.5° to 22.9° | 3.1 mm/day | 80.8% | 3.9 m/s | 12.3 hours |
| October | 8.7 °C1° to 18.1° | 3.3 mm/day | 81.7% | 4.5 m/s | 10.6 hours |
| November | 2.9 °C-5.1° to 11.2° | 2.4 mm/day | 83.9% | 5 m/s | 9.2 hours |
| December | -2.3 °C-11.9° to 5.6° | 2 mm/day | 88.8% | 5.3 m/s | 8.5 hours |
See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.
Comparative monthly averages for temperature, precipitation, wind, humidity, and daylight duration
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Examine monthly temperature, precipitation, and regional atmospheric patterns across diverse protected areas






Delve into the structural details and natural landscapes of Horseshoe Bay Wilderness. Through the MoriAtlas database, understand the connection between its post-glacial wetland history and the broader coastal ecology of Michigan, offering a clear perspective on how this protected reserve anchors the local Lake Huron shoreline environment.