Sterling, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.9 °F (low) to 56 °F (high). Annual precipitation averages 31.4 Inches. 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 | 12.3 °F | 28.8 °F | 1.71 in. |
| February | 12.6 °F | 31.7 °F | 1.53 in. |
| March | 20.3 °F | 41.6 °F | 1.72 in. |
| April | 31.4 °F | 54.5 °F | 3.16 in. |
| May | 43.2 °F | 67.3 °F | 3.65 in. |
| June | 52.9 °F | 76.9 °F | 3.51 in. |
| July | 56.9 °F | 81.1 °F | 2.95 in. |
| August | 55.5 °F | 79.5 °F | 3.49 in. |
| September | 48.4 °F | 72.5 °F | 2.63 in. |
| October | 37.4 °F | 59.1 °F | 2.97 in. |
| November | 28.2 °F | 45.2 °F | 2.31 in. |
| December | 19.9 °F | 34.2 °F | 1.76 in. |
| Annual | 34.9 °F | 56 °F | 31.39 in. |
| 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 : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |