Briarcliff, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.9 °C (low) to 26.1 °C (high). Annual precipitation averages 862.8 Millimeters. Briarcliff 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 | 2.6 °C | 16.2 °C | 56.13 mm |
| February | 4.7 °C | 18.1 °C | 49.53 mm |
| March | 8.6 °C | 22 °C | 70.87 mm |
| April | 12.4 °C | 25.9 °C | 64.77 mm |
| May | 17.4 °C | 29.6 °C | 111.25 mm |
| June | 21 °C | 33 °C | 81.79 mm |
| July | 22.2 °C | 35.1 °C | 54.61 mm |
| August | 22.1 °C | 35.7 °C | 60.45 mm |
| September | 19.1 °C | 32.2 °C | 87.38 mm |
| October | 13.5 °C | 27.3 °C | 94.74 mm |
| November | 7.8 °C | 21 °C | 72.64 mm |
| December | 3.3 °C | 16.8 °C | 58.67 mm |
| Annual | 12.9 °C | 26.1 °C | 862.83 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |