Annona, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11 °C (low) to 23.9 °C (high). Annual precipitation averages 1272.3 Millimeters. Annona 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 | 0.2 °C | 12.6 °C | 87.38 mm |
| February | 2 °C | 14.8 °C | 99.57 mm |
| March | 6.1 °C | 19.3 °C | 122.17 mm |
| April | 10.2 °C | 23.4 °C | 118.87 mm |
| May | 15.7 °C | 27.4 °C | 131.32 mm |
| June | 20.1 °C | 31.8 °C | 104.9 mm |
| July | 21.8 °C | 34.2 °C | 79.76 mm |
| August | 21.2 °C | 34.5 °C | 74.68 mm |
| September | 17.6 °C | 30.9 °C | 103.63 mm |
| October | 10.8 °C | 25.1 °C | 121.41 mm |
| November | 5.4 °C | 18.7 °C | 106.93 mm |
| December | 1.2 °C | 13.7 °C | 121.67 mm |
| Annual | 11 °C | 23.9 °C | 1272.29 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 8b : -9.4°C to -6.7°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 |