Bastrop, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 56.3 °F (low) to 80.2 °F (high). Annual precipitation averages 36.7 Inches. Bastrop 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. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 37.7 °F | 62.2 °F | 2.78 in. |
| February | 41.7 °F | 65.7 °F | 2.18 in. |
| March | 48.6 °F | 72.7 °F | 2.95 in. |
| April | 55.4 °F | 79.7 °F | 3.07 in. |
| May | 64.7 °F | 86.3 °F | 4.71 in. |
| June | 71.2 °F | 92.8 °F | 3.07 in. |
| July | 73.0 °F | 96.1 °F | 1.96 in. |
| August | 72.9 °F | 97.2 °F | 3.12 in. |
| September | 67.3 °F | 91.3 °F | 2.71 in. |
| October | 56.8 °F | 82.7 °F | 4.24 in. |
| November | 46.8 °F | 71.6 °F | 2.83 in. |
| December | 39.3 °F | 63.7 °F | 3.09 in. |
| Annual | 56.3 °F | 80.2 °F | 36.71 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |