Rowena, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.2 °C (low) to 26 °C (high). Annual precipitation averages 611.9 Millimeters. Rowena is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0 °C | 15.3 °C | 27.43 mm |
| February | 2.2 °C | 17.7 °C | 38.35 mm |
| March | 6.6 °C | 21.9 °C | 49.78 mm |
| April | 10.6 °C | 26.7 °C | 41.91 mm |
| May | 16.1 °C | 30.5 °C | 82.04 mm |
| June | 20.3 °C | 33.9 °C | 78.74 mm |
| July | 21.8 °C | 35.6 °C | 44.96 mm |
| August | 21.6 °C | 35.4 °C | 57.15 mm |
| September | 17.7 °C | 31.7 °C | 62.99 mm |
| October | 11.6 °C | 26.7 °C | 60.2 mm |
| November | 5.4 °C | 20.3 °C | 39.88 mm |
| December | 0.9 °C | 15.9 °C | 28.45 mm |
| Annual | 11.2 °C | 26 °C | 611.88 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 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 |