Rosanky, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 56.2 °F (low) to 78.9 °F (high). Annual precipitation averages 36.9 Inches. Rosanky is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.5 °F | 61.4 °F | 2.71 in. |
| February | 42.9 °F | 65.0 °F | 2.16 in. |
| March | 48.9 °F | 71.7 °F | 2.94 in. |
| April | 55.3 °F | 78.4 °F | 3.12 in. |
| May | 64.0 °F | 84.8 °F | 4.6 in. |
| June | 70.2 °F | 91.0 °F | 3.24 in. |
| July | 72.0 °F | 94.6 °F | 1.97 in. |
| August | 71.8 °F | 95.6 °F | 2.8 in. |
| September | 66.3 °F | 89.7 °F | 3.11 in. |
| October | 56.9 °F | 81.4 °F | 4.3 in. |
| November | 47.1 °F | 70.7 °F | 3.02 in. |
| December | 40.2 °F | 63.0 °F | 2.91 in. |
| Annual | 56.2 °F | 78.9 °F | 36.88 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |