Centennial, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 36.7 °F (low) to 64.5 °F (high). Annual precipitation averages 17.4 Inches. Centennial 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.7 °F | 45.5 °F | 0.7 in. |
| February | 19.9 °F | 46.4 °F | 0.77 in. |
| March | 27.4 °F | 54.9 °F | 1.61 in. |
| April | 33.5 °F | 60.6 °F | 2.29 in. |
| May | 42.9 °F | 69.5 °F | 2.22 in. |
| June | 52.5 °F | 81.6 °F | 1.7 in. |
| July | 58.7 °F | 87.7 °F | 1.88 in. |
| August | 56.9 °F | 85.4 °F | 2.18 in. |
| September | 48.4 °F | 78.1 °F | 1.44 in. |
| October | 36.2 °F | 65.2 °F | 1.17 in. |
| November | 26.5 °F | 53.7 °F | 0.88 in. |
| December | 18.6 °F | 44.9 °F | 0.56 in. |
| Annual | 36.7 °F | 64.5 °F | 17.4 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |