Spring Arbor, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.8 °F (low) to 57.4 °F (high). Annual precipitation averages 36.9 Inches. Spring Arbor is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.3 °F | 30.5 °F | 2.4 in. |
| February | 17.0 °F | 33.5 °F | 2.01 in. |
| March | 25.2 °F | 43.8 °F | 2.3 in. |
| April | 36.4 °F | 56.9 °F | 3.33 in. |
| May | 48.1 °F | 68.6 °F | 3.96 in. |
| June | 57.4 °F | 77.9 °F | 3.85 in. |
| July | 60.6 °F | 81.6 °F | 3.63 in. |
| August | 58.9 °F | 79.5 °F | 3.81 in. |
| September | 51.4 °F | 73.2 °F | 3.29 in. |
| October | 40.6 °F | 60.5 °F | 3.24 in. |
| November | 30.8 °F | 47.0 °F | 2.76 in. |
| December | 22.7 °F | 35.4 °F | 2.28 in. |
| Annual | 38.8 °F | 57.4 °F | 36.86 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |