Lamesa, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 8.5 °C (low) to 24.2 °C (high). Annual precipitation averages 445 Millimeters. Lamesa is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.4 °C | 13.2 °C | 16.26 mm |
| February | -0.8 °C | 15.7 °C | 19.05 mm |
| March | 3.1 °C | 20.3 °C | 25.15 mm |
| April | 7.5 °C | 24.9 °C | 23.88 mm |
| May | 13.3 °C | 29.2 °C | 59.69 mm |
| June | 18.1 °C | 33.1 °C | 63.75 mm |
| July | 19.6 °C | 34.1 °C | 42.42 mm |
| August | 19.1 °C | 33.5 °C | 40.13 mm |
| September | 15.3 °C | 29.4 °C | 73.66 mm |
| October | 9.2 °C | 24.9 °C | 36.58 mm |
| November | 2.3 °C | 18.2 °C | 23.11 mm |
| December | -1.8 °C | 13.6 °C | 21.34 mm |
| Annual | 8.5 °C | 24.2 °C | 445.02 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |