Tower, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.7 °C (low) to 12.7 °C (high). Annual precipitation averages 811.3 Millimeters. Tower is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.7 °C | -2.8 °C | 51.31 mm |
| February | -12.4 °C | -1.3 °C | 36.83 mm |
| March | -8.4 °C | 4.2 °C | 45.21 mm |
| April | -1.5 °C | 11.7 °C | 73.66 mm |
| May | 4.9 °C | 19.4 °C | 77.47 mm |
| June | 10.2 °C | 24.8 °C | 74.68 mm |
| July | 12.9 °C | 27.1 °C | 77.98 mm |
| August | 12.2 °C | 26.2 °C | 82.8 mm |
| September | 8.3 °C | 22.1 °C | 82.04 mm |
| October | 2.9 °C | 14.3 °C | 91.19 mm |
| November | -1.9 °C | 6.4 °C | 62.74 mm |
| December | -7.1 °C | 0.4 °C | 55.37 mm |
| Annual | 0.7 °C | 12.7 °C | 811.28 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |