Tower, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.3 °F (low) to 54.9 °F (high). Annual precipitation averages 31.9 Inches. 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 | 11.0 °F | 26.9 °F | 2.02 in. |
| February | 9.6 °F | 29.6 °F | 1.45 in. |
| March | 16.9 °F | 39.5 °F | 1.78 in. |
| April | 29.3 °F | 53.0 °F | 2.9 in. |
| May | 40.8 °F | 67.0 °F | 3.05 in. |
| June | 50.3 °F | 76.7 °F | 2.94 in. |
| July | 55.3 °F | 80.7 °F | 3.07 in. |
| August | 54.0 °F | 79.2 °F | 3.26 in. |
| September | 47.0 °F | 71.8 °F | 3.23 in. |
| October | 37.3 °F | 57.8 °F | 3.59 in. |
| November | 28.5 °F | 43.6 °F | 2.47 in. |
| December | 19.2 °F | 32.7 °F | 2.18 in. |
| Annual | 33.3 °F | 54.9 °F | 31.94 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |