Towner, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 37.4 °F (low) to 67.4 °F (high). Annual precipitation averages 17.1 Inches. Towner 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 | 15.8 °F | 44.7 °F | 0.33 in. |
| February | 18.4 °F | 47.2 °F | 0.43 in. |
| March | 26.2 °F | 57.5 °F | 0.82 in. |
| April | 34.6 °F | 65.5 °F | 1.5 in. |
| May | 45.6 °F | 75.4 °F | 2.24 in. |
| June | 56.3 °F | 86.9 °F | 2.51 in. |
| July | 61.6 °F | 91.8 °F | 3.11 in. |
| August | 59.6 °F | 88.9 °F | 2.78 in. |
| September | 51.3 °F | 82.1 °F | 1.14 in. |
| October | 37.0 °F | 68.7 °F | 1.34 in. |
| November | 25.4 °F | 54.9 °F | 0.46 in. |
| December | 16.8 °F | 45.0 °F | 0.44 in. |
| Annual | 37.4 °F | 67.4 °F | 17.1 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 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |