Meridian, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 36 °F (low) to 64.3 °F (high). Annual precipitation averages 18.3 Inches. Meridian 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 | 18.1 °F | 45.4 °F | 0.65 in. |
| February | 19.3 °F | 46.2 °F | 0.73 in. |
| March | 26.7 °F | 54.6 °F | 1.64 in. |
| April | 32.8 °F | 60.5 °F | 2.4 in. |
| May | 42.1 °F | 69.3 °F | 2.38 in. |
| June | 51.7 °F | 81.3 °F | 2.05 in. |
| July | 57.9 °F | 87.4 °F | 2.06 in. |
| August | 56.1 °F | 85.1 °F | 2.25 in. |
| September | 47.8 °F | 78.0 °F | 1.45 in. |
| October | 35.7 °F | 65.2 °F | 1.2 in. |
| November | 26.1 °F | 53.7 °F | 0.87 in. |
| December | 18.1 °F | 44.7 °F | 0.64 in. |
| Annual | 36 °F | 64.3 °F | 18.32 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 |