Liberty, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 15.3 °C (low) to 26 °C (high). Annual precipitation averages 1601.5 Millimeters. Liberty is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.9 °C | 16.9 °C | 126.49 mm |
| February | 7.9 °C | 18.9 °C | 99.82 mm |
| March | 11.4 °C | 22.1 °C | 103.89 mm |
| April | 15.1 °C | 25.7 °C | 116.84 mm |
| May | 19.4 °C | 29.3 °C | 147.07 mm |
| June | 22.8 °C | 32.4 °C | 140.72 mm |
| July | 23.8 °C | 33.7 °C | 123.44 mm |
| August | 23.6 °C | 34.1 °C | 157.48 mm |
| September | 21 °C | 31.7 °C | 156.97 mm |
| October | 15.8 °C | 27.6 °C | 171.96 mm |
| November | 10.3 °C | 22 °C | 121.16 mm |
| December | 6.9 °C | 17.8 °C | 135.64 mm |
| Annual | 15.3 °C | 26 °C | 1601.48 mm |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |