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Best Time for Michigan's Upper Peninsula
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Sweet spot: May, July, August. Computed from NASA POWER climate normals across the route's overnight towns, balancing temperature, rainfall and daylight.
💡 Good to know
- Kayaks and cruise boats run beneath Pictured Rocks' painted cliffs, Superior warms to swimmable in shallow bays, and pasty shops fuel it all.
- The Rocks' waterfalls freeze into climbable curtains and the UP measures snow in metres — a hardy, beautiful, entirely different trip.
| Month | Low | High | Rain | Daylight | |
|---|---|---|---|---|---|
| January | −8.8°C | −4.2°C | 52 mm | 8.8 h | ❄ |
| February | −9.5°C | −4.2°C | 45 mm | 10.0 h | ❄ |
| March | −5.7°C | 0.5°C | 50 mm | 11.6 h | ❄ |
| April | −0.8°C | 6.5°C | 77 mm | 13.3 h | ❄ |
| May | 4.2°C | 12.4°C | 86 mm | 14.8 h | |
| June | 9.1°C | 17.4°C | 92 mm | 15.6 h | |
| July | 13.6°C | 21.4°C | 85 mm | 15.3 h | |
| August | 14.8°C | 21.7°C | 76 mm | 14.0 h | |
| September | 11.7°C | 18.4°C | 98 mm | 12.3 h | |
| October | 5.6°C | 11.1°C | 111 mm | 10.6 h | |
| November | 0.0°C | 4.7°C | 71 mm | 9.1 h | ❄ |
| December | −5.3°C | −1.1°C | 66 mm | 8.4 h | ❄ |