Spring Arbor, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.8 °C (low) to 14.1 °C (high). Annual precipitation averages 936.2 Millimeters. 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 | -8.7 °C | -0.8 °C | 60.96 mm |
| February | -8.3 °C | 0.8 °C | 51.05 mm |
| March | -3.8 °C | 6.6 °C | 58.42 mm |
| April | 2.4 °C | 13.8 °C | 84.58 mm |
| May | 8.9 °C | 20.3 °C | 100.58 mm |
| June | 14.1 °C | 25.5 °C | 97.79 mm |
| July | 15.9 °C | 27.6 °C | 92.2 mm |
| August | 14.9 °C | 26.4 °C | 96.77 mm |
| September | 10.8 °C | 22.9 °C | 83.57 mm |
| October | 4.8 °C | 15.8 °C | 82.3 mm |
| November | -0.7 °C | 8.3 °C | 70.1 mm |
| December | -5.2 °C | 1.9 °C | 57.91 mm |
| Annual | 3.8 °C | 14.1 °C | 936.23 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |