Burnet, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.8 °C (low) to 25.1 °C (high). Annual precipitation averages 786.9 Millimeters. Burnet is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.6 °C | 15 °C | 48.77 mm |
| February | 4.5 °C | 16.9 °C | 50.29 mm |
| March | 8.3 °C | 20.9 °C | 72.14 mm |
| April | 12.2 °C | 25.1 °C | 58.42 mm |
| May | 17.1 °C | 28.5 °C | 97.03 mm |
| June | 20.9 °C | 32.4 °C | 64.01 mm |
| July | 22.2 °C | 34.2 °C | 49.53 mm |
| August | 22.2 °C | 34.8 °C | 50.04 mm |
| September | 18.9 °C | 31.2 °C | 84.33 mm |
| October | 13.5 °C | 26.2 °C | 89.41 mm |
| November | 7.8 °C | 20.1 °C | 68.58 mm |
| December | 3.2 °C | 15.7 °C | 54.36 mm |
| Annual | 12.8 °C | 25.1 °C | 786.91 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |