Monument, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 8.4 °C (low) to 24.5 °C (high). Annual precipitation averages 338.3 Millimeters. Monument is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.2 °C | 13.7 °C | 11.94 mm |
| February | -0.5 °C | 16.3 °C | 12.45 mm |
| March | 3.2 °C | 20.7 °C | 15.75 mm |
| April | 7.1 °C | 25.2 °C | 15.75 mm |
| May | 12.7 °C | 29.7 °C | 39.37 mm |
| June | 17.7 °C | 34.1 °C | 38.86 mm |
| July | 19.6 °C | 34.4 °C | 45.21 mm |
| August | 18.9 °C | 33.6 °C | 46.23 mm |
| September | 15.1 °C | 29.6 °C | 57.15 mm |
| October | 8.9 °C | 24.9 °C | 25.91 mm |
| November | 2.3 °C | 18.3 °C | 15.49 mm |
| December | -1.7 °C | 13.9 °C | 14.22 mm |
| Annual | 8.4 °C | 24.5 °C | 338.33 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |