Timnath, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 34.6 °F (low) to 63.2 °F (high). Annual precipitation averages 14.3 Inches. Timnath is located in USDA Plant Hardiness Zone 5b. 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 | 14.7 °F | 41.7 °F | 0.38 in. |
| February | 17.0 °F | 43.8 °F | 0.37 in. |
| March | 25.4 °F | 54.4 °F | 1.01 in. |
| April | 32.6 °F | 61.0 °F | 1.84 in. |
| May | 42.6 °F | 69.5 °F | 2.74 in. |
| June | 51.9 °F | 81.4 °F | 1.67 in. |
| July | 57.3 °F | 87.6 °F | 1.59 in. |
| August | 54.9 °F | 85.2 °F | 1.35 in. |
| September | 46.1 °F | 77.6 °F | 1.28 in. |
| October | 34.1 °F | 64.0 °F | 1.11 in. |
| November | 23.3 °F | 51.0 °F | 0.6 in. |
| December | 14.8 °F | 41.2 °F | 0.39 in. |
| Annual | 34.6 °F | 63.2 °F | 14.33 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 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |