Hico, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.6 °C (low) to 25.2 °C (high). Annual precipitation averages 904.5 Millimeters. Hico 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 | 0.6 °C | 14.6 °C | 57.66 mm |
| February | 2.6 °C | 16.7 °C | 60.96 mm |
| March | 6.8 °C | 20.8 °C | 79.76 mm |
| April | 11 °C | 25.3 °C | 71.37 mm |
| May | 16.4 °C | 28.9 °C | 118.36 mm |
| June | 20.6 °C | 32.8 °C | 114.55 mm |
| July | 22.2 °C | 35.2 °C | 46.48 mm |
| August | 21.9 °C | 35.2 °C | 56.13 mm |
| September | 17.9 °C | 31.4 °C | 79.25 mm |
| October | 11.9 °C | 26 °C | 100.33 mm |
| November | 6.1 °C | 19.7 °C | 61.72 mm |
| December | 1.5 °C | 15.2 °C | 57.91 mm |
| Annual | 11.6 °C | 25.2 °C | 904.48 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |