Fredericksburg, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.7 °F (low) to 77.2 °F (high). Annual precipitation averages 29.5 Inches. Fredericksburg 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 | 35.8 °F | 59.7 °F | 1.62 in. |
| February | 39.0 °F | 63.6 °F | 1.76 in. |
| March | 46.3 °F | 70.3 °F | 2.39 in. |
| April | 52.9 °F | 77.5 °F | 2.32 in. |
| May | 61.7 °F | 83.3 °F | 4.11 in. |
| June | 68.1 °F | 89.9 °F | 3.09 in. |
| July | 70.1 °F | 92.8 °F | 1.85 in. |
| August | 69.9 °F | 93.9 °F | 2.31 in. |
| September | 63.8 °F | 87.5 °F | 3.06 in. |
| October | 54.8 °F | 79.0 °F | 2.89 in. |
| November | 44.7 °F | 68.2 °F | 2.24 in. |
| December | 37.1 °F | 60.7 °F | 1.89 in. |
| Annual | 53.7 °F | 77.2 °F | 29.53 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |