Moriarty, New Mexico has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.4 °C (low) to 20.1 °C (high). Annual precipitation averages 344.2 Millimeters. Moriarty is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8 °C | 8.3 °C | 13.97 mm |
| February | -6 °C | 10.9 °C | 10.16 mm |
| March | -3.5 °C | 15.6 °C | 18.54 mm |
| April | -0.4 °C | 19.7 °C | 16.76 mm |
| May | 4.5 °C | 24.7 °C | 31.5 mm |
| June | 9.3 °C | 30.8 °C | 22.61 mm |
| July | 12.7 °C | 31.4 °C | 67.82 mm |
| August | 11.9 °C | 29.9 °C | 54.36 mm |
| September | 7.7 °C | 26.8 °C | 39.62 mm |
| October | 1.3 °C | 20.8 °C | 33.78 mm |
| November | -4.3 °C | 14.1 °C | 18.03 mm |
| December | -7.9 °C | 8.2 °C | 17.02 mm |
| Annual | 1.4 °C | 20.1 °C | 344.17 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |