Alpine, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 9 °C (low) to 25 °C (high). Annual precipitation averages 396 Millimeters. Alpine 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 | -0.3 °C | 15.3 °C | 13.46 mm |
| February | 1.5 °C | 17.9 °C | 10.67 mm |
| March | 4.4 °C | 21.8 °C | 9.91 mm |
| April | 8.1 °C | 26.2 °C | 13.46 mm |
| May | 13.1 °C | 30.3 °C | 28.7 mm |
| June | 17.2 °C | 33.3 °C | 54.1 mm |
| July | 18 °C | 32.3 °C | 77.72 mm |
| August | 17.6 °C | 31.8 °C | 69.34 mm |
| September | 14.6 °C | 28.8 °C | 57.91 mm |
| October | 9.4 °C | 25.7 °C | 31.24 mm |
| November | 3.6 °C | 20.1 °C | 14.99 mm |
| December | 0.3 °C | 15.9 °C | 14.48 mm |
| Annual | 9 °C | 25 °C | 395.98 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 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |