Red Rock, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.4 °C (low) to 26.3 °C (high). Annual precipitation averages 912.1 Millimeters. Red Rock is located in USDA Plant Hardiness Zone 9a. 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 | 3.4 °C | 16.3 °C | 67.06 mm |
| February | 5.7 °C | 18.4 °C | 53.34 mm |
| March | 9.2 °C | 22.1 °C | 71.63 mm |
| April | 12.9 °C | 25.9 °C | 80.52 mm |
| May | 17.9 °C | 29.6 °C | 113.28 mm |
| June | 21.4 °C | 33.1 °C | 73.66 mm |
| July | 22.4 °C | 35 °C | 49.02 mm |
| August | 22.3 °C | 35.7 °C | 64.77 mm |
| September | 19.1 °C | 32.4 °C | 81.79 mm |
| October | 13.8 °C | 27.7 °C | 106.43 mm |
| November | 8.2 °C | 21.6 °C | 78.49 mm |
| December | 4.2 °C | 17.3 °C | 72.14 mm |
| Annual | 13.4 °C | 26.3 °C | 912.13 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 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |