San Cristobal, New Mexico has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.8 °C (low) to 16.4 °C (high). Annual precipitation averages 372.9 Millimeters. San Cristobal is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.1 °C | 4.3 °C | 19.81 mm |
| February | -9.2 °C | 6.5 °C | 17.53 mm |
| March | -5.9 °C | 11.2 °C | 28.7 mm |
| April | -1 °C | 15.8 °C | 25.65 mm |
| May | 3.1 °C | 20.9 °C | 30.73 mm |
| June | 7.3 °C | 26.8 °C | 20.83 mm |
| July | 10.9 °C | 28.2 °C | 53.34 mm |
| August | 10.4 °C | 26.8 °C | 51.31 mm |
| September | 6.8 °C | 23.6 °C | 39.62 mm |
| October | -1.2 °C | 17.4 °C | 35.31 mm |
| November | -6.8 °C | 10.2 °C | 24.64 mm |
| December | -11.3 °C | 4.6 °C | 25.4 mm |
| Annual | -0.8 °C | 16.4 °C | 372.87 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |