Ramah, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.5 °C (low) to 18.6 °C (high). Annual precipitation averages 339.4 Millimeters. Ramah is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.1 °C | 7.1 °C | 24.38 mm |
| February | -6.7 °C | 9.3 °C | 22.61 mm |
| March | -4.6 °C | 13.4 °C | 23.88 mm |
| April | -1.4 °C | 17.7 °C | 16.51 mm |
| May | 3 °C | 22.6 °C | 19.56 mm |
| June | 7.7 °C | 29 °C | 11.18 mm |
| July | 12.1 °C | 30.1 °C | 49.78 mm |
| August | 11.4 °C | 28.6 °C | 65.53 mm |
| September | 7.3 °C | 25.6 °C | 34.8 mm |
| October | 0.6 °C | 19.8 °C | 24.89 mm |
| November | -5.1 °C | 12.6 °C | 20.83 mm |
| December | -8.9 °C | 7.3 °C | 25.4 mm |
| Annual | 0.5 °C | 18.6 °C | 339.35 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |