Cross Mountain, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.6 °C (low) to 25.3 °C (high). Annual precipitation averages 968.3 Millimeters. Cross Mountain is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.8 °C | 15.9 °C | 54.36 mm |
| February | 4.9 °C | 18.3 °C | 52.07 mm |
| March | 8.6 °C | 21.7 °C | 71.63 mm |
| April | 12.2 °C | 25.3 °C | 67.56 mm |
| May | 16.9 °C | 28.6 °C | 120.4 mm |
| June | 20.3 °C | 32 °C | 99.57 mm |
| July | 21.3 °C | 33.4 °C | 68.83 mm |
| August | 21.2 °C | 34.1 °C | 76.2 mm |
| September | 18.4 °C | 30.8 °C | 111 mm |
| October | 13.3 °C | 26.3 °C | 113.79 mm |
| November | 7.7 °C | 20.8 °C | 74.68 mm |
| December | 3.8 °C | 16.6 °C | 58.17 mm |
| Annual | 12.6 °C | 25.3 °C | 968.26 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |