La Salle, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 33.8 °F (low) to 63.8 °F (high). Annual precipitation averages 13.8 Inches. La Salle is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.6 °F | 40.5 °F | 0.37 in. |
| February | 15.5 °F | 43.6 °F | 0.42 in. |
| March | 24.5 °F | 55.0 °F | 0.88 in. |
| April | 32.2 °F | 61.9 °F | 1.79 in. |
| May | 42.8 °F | 70.8 °F | 2.47 in. |
| June | 52.4 °F | 82.9 °F | 1.71 in. |
| July | 57.3 °F | 88.8 °F | 1.39 in. |
| August | 54.7 °F | 86.6 °F | 1.45 in. |
| September | 45.7 °F | 79.1 °F | 1.16 in. |
| October | 33.0 °F | 65.1 °F | 1.08 in. |
| November | 21.8 °F | 51.2 °F | 0.67 in. |
| December | 12.7 °F | 40.5 °F | 0.4 in. |
| Annual | 33.8 °F | 63.8 °F | 13.79 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |