La Jara, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -4.2 °C (low) to 15 °C (high). Annual precipitation averages 195.8 Millimeters. La Jara is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -17.6 °C | 1.1 °C | 7.11 mm |
| February | -13.6 °C | 4.6 °C | 5.84 mm |
| March | -8.1 °C | 10.7 °C | 12.19 mm |
| April | -4.3 °C | 14.9 °C | 14.48 mm |
| May | 1 °C | 19.8 °C | 17.02 mm |
| June | 4.8 °C | 25.3 °C | 10.16 mm |
| July | 8.2 °C | 26.9 °C | 29.72 mm |
| August | 7.1 °C | 25.8 °C | 34.54 mm |
| September | 2.9 °C | 22.9 °C | 26.42 mm |
| October | -3.8 °C | 17 °C | 17.53 mm |
| November | -10.4 °C | 9.3 °C | 10.92 mm |
| December | -16.7 °C | 1.9 °C | 9.91 mm |
| Annual | -4.2 °C | 15 °C | 195.84 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |