Platteville, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 34.2 °F (low) to 64.2 °F (high). Annual precipitation averages 13.6 Inches. Platteville 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 | 13.6 °F | 41.8 °F | 0.32 in. |
| February | 16.3 °F | 44.3 °F | 0.41 in. |
| March | 25.1 °F | 55.4 °F | 0.98 in. |
| April | 32.4 °F | 62.0 °F | 1.73 in. |
| May | 42.7 °F | 70.9 °F | 2.41 in. |
| June | 52.1 °F | 83.0 °F | 1.54 in. |
| July | 57.3 °F | 88.9 °F | 1.45 in. |
| August | 54.8 °F | 86.8 °F | 1.44 in. |
| September | 46.0 °F | 79.2 °F | 1.28 in. |
| October | 33.5 °F | 65.2 °F | 1.02 in. |
| November | 22.7 °F | 51.9 °F | 0.58 in. |
| December | 13.7 °F | 41.5 °F | 0.42 in. |
| Annual | 34.2 °F | 64.2 °F | 13.58 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 5a : -20°F to -15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |