Sterling, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.6 °C (low) to 13.3 °C (high). Annual precipitation averages 797.3 Millimeters. Sterling is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.9 °C | -1.8 °C | 43.43 mm |
| February | -10.8 °C | -0.2 °C | 38.86 mm |
| March | -6.5 °C | 5.3 °C | 43.69 mm |
| April | -0.3 °C | 12.5 °C | 80.26 mm |
| May | 6.2 °C | 19.6 °C | 92.71 mm |
| June | 11.6 °C | 24.9 °C | 89.15 mm |
| July | 13.8 °C | 27.3 °C | 74.93 mm |
| August | 13.1 °C | 26.4 °C | 88.65 mm |
| September | 9.1 °C | 22.5 °C | 66.8 mm |
| October | 3 °C | 15.1 °C | 75.44 mm |
| November | -2.1 °C | 7.3 °C | 58.67 mm |
| December | -6.7 °C | 1.2 °C | 44.7 mm |
| Annual | 1.6 °C | 13.3 °C | 797.29 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |