Rendon, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.8 °C (low) to 24.9 °C (high). Annual precipitation averages 978.9 Millimeters. Rendon 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 | 1.6 °C | 13.8 °C | 63.5 mm |
| February | 3.7 °C | 16.1 °C | 68.58 mm |
| March | 7.8 °C | 20.1 °C | 89.66 mm |
| April | 12 °C | 24.3 °C | 86.61 mm |
| May | 17.3 °C | 28.6 °C | 117.6 mm |
| June | 21.7 °C | 33 °C | 97.79 mm |
| July | 23.6 °C | 35.4 °C | 50.8 mm |
| August | 23.4 °C | 35.5 °C | 63.5 mm |
| September | 19.3 °C | 31.6 °C | 80.52 mm |
| October | 13.2 °C | 25.9 °C | 111.76 mm |
| November | 7.3 °C | 19.4 °C | 76.71 mm |
| December | 2.7 °C | 14.7 °C | 71.88 mm |
| Annual | 12.8 °C | 24.9 °C | 978.91 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 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 |