Callisburg, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.2 °C (low) to 23.5 °C (high). Annual precipitation averages 1026.4 Millimeters. Callisburg is located in USDA Plant Hardiness Zone 8a. 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 | -0.4 °C | 11.7 °C | 52.83 mm |
| February | 1.6 °C | 14.2 °C | 63.75 mm |
| March | 5.8 °C | 18.7 °C | 88.14 mm |
| April | 10.2 °C | 23.1 °C | 93.47 mm |
| May | 15.6 °C | 27 °C | 136.91 mm |
| June | 20.4 °C | 31.7 °C | 104.65 mm |
| July | 22.7 °C | 34.6 °C | 69.09 mm |
| August | 22.3 °C | 34.9 °C | 67.56 mm |
| September | 18.1 °C | 30.6 °C | 94.74 mm |
| October | 11.7 °C | 24.7 °C | 109.98 mm |
| November | 5.6 °C | 18 °C | 70.36 mm |
| December | 0.8 °C | 12.8 °C | 74.93 mm |
| Annual | 11.2 °C | 23.5 °C | 1026.41 mm |
| 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 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |