Georgetown, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55.7 °F (low) to 79.1 °F (high). Annual precipitation averages 38.1 Inches. Georgetown 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 | 37.1 °F | 60.9 °F | 2.9 in. |
| February | 40.8 °F | 64.4 °F | 2.17 in. |
| March | 47.7 °F | 71.3 °F | 3.01 in. |
| April | 54.7 °F | 79.0 °F | 2.8 in. |
| May | 64.0 °F | 85.7 °F | 4.67 in. |
| June | 70.6 °F | 92.2 °F | 3.58 in. |
| July | 72.9 °F | 95.6 °F | 3.0 in. |
| August | 72.4 °F | 96.5 °F | 2.3 in. |
| September | 66.9 °F | 90.5 °F | 3.6 in. |
| October | 56.6 °F | 81.5 °F | 4.09 in. |
| November | 46.2 °F | 69.9 °F | 3.05 in. |
| December | 38.7 °F | 62.1 °F | 2.91 in. |
| Annual | 55.7 °F | 79.1 °F | 38.08 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |