Covington, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.2 °C (low) to 9.7 °C (high). Annual precipitation averages 833.1 Millimeters. Covington is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.1 °C | -6.6 °C | 42.67 mm |
| February | -14.9 °C | -4.3 °C | 35.56 mm |
| March | -10.3 °C | 1.8 °C | 43.18 mm |
| April | -3.2 °C | 8.7 °C | 69.34 mm |
| May | 3.9 °C | 17.2 °C | 79.5 mm |
| June | 9.6 °C | 22.2 °C | 90.42 mm |
| July | 11.8 °C | 24.3 °C | 97.28 mm |
| August | 11.3 °C | 23.6 °C | 81.03 mm |
| September | 7.4 °C | 19.3 °C | 92.46 mm |
| October | 1.3 °C | 11.1 °C | 94.49 mm |
| November | -5.2 °C | 2.8 °C | 57.66 mm |
| December | -11.2 °C | -3.5 °C | 49.53 mm |
| Annual | -1.2 °C | 9.7 °C | 833.12 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |