Adrian, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.7 °F (low) to 59 °F (high). Annual precipitation averages 35.4 Inches. Adrian 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 | 16.4 °F | 31.9 °F | 2.35 in. |
| February | 17.3 °F | 34.9 °F | 1.99 in. |
| March | 25.6 °F | 45.0 °F | 2.43 in. |
| April | 36.3 °F | 58.4 °F | 3.43 in. |
| May | 47.7 °F | 70.1 °F | 3.84 in. |
| June | 57.5 °F | 79.7 °F | 3.72 in. |
| July | 60.6 °F | 83.6 °F | 3.21 in. |
| August | 58.8 °F | 81.6 °F | 3.34 in. |
| September | 51.2 °F | 75.5 °F | 3.06 in. |
| October | 40.2 °F | 62.4 °F | 2.89 in. |
| November | 30.5 °F | 48.3 °F | 2.82 in. |
| December | 22.4 °F | 36.8 °F | 2.33 in. |
| Annual | 38.7 °F | 59 °F | 35.41 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 | Dfb - Humid Continental Mild Summer, Wet All Year |