Leroy, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.2 °C (low) to 25.4 °C (high). Annual precipitation averages 957.8 Millimeters. Leroy 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 | 2.4 °C | 14.6 °C | 70.1 mm |
| February | 4.5 °C | 16.9 °C | 67.06 mm |
| March | 8.6 °C | 20.7 °C | 91.95 mm |
| April | 12.4 °C | 25 °C | 84.58 mm |
| May | 17.7 °C | 28.9 °C | 119.63 mm |
| June | 21.7 °C | 33.1 °C | 90.68 mm |
| July | 23.3 °C | 35.2 °C | 42.42 mm |
| August | 23.1 °C | 35.6 °C | 59.18 mm |
| September | 19.4 °C | 32.1 °C | 74.42 mm |
| October | 13.5 °C | 26.7 °C | 109.22 mm |
| November | 7.9 °C | 20.2 °C | 74.42 mm |
| December | 3.6 °C | 15.6 °C | 74.17 mm |
| Annual | 13.2 °C | 25.4 °C | 957.83 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 |