Barton Creek, 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 939 Millimeters. Barton Creek is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.3 °C | 16.4 °C | 64.52 mm |
| February | 5.4 °C | 18.4 °C | 52.07 mm |
| March | 9.2 °C | 22.2 °C | 73.66 mm |
| April | 12.9 °C | 26.2 °C | 67.06 mm |
| May | 17.8 °C | 29.8 °C | 120.9 mm |
| June | 21.3 °C | 33.3 °C | 98.04 mm |
| July | 22.4 °C | 35.2 °C | 62.74 mm |
| August | 22.4 °C | 35.9 °C | 61.72 mm |
| September | 19.4 °C | 32.6 °C | 91.19 mm |
| October | 14.1 °C | 27.7 °C | 103.38 mm |
| November | 8.4 °C | 21.3 °C | 74.42 mm |
| December | 4.2 °C | 17.1 °C | 69.34 mm |
| Annual | 13.4 °C | 26.3 °C | 939.04 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 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 |