Hilltop Lakes, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.5 °C (low) to 25.8 °C (high). Annual precipitation averages 1094.8 Millimeters. Hilltop Lakes 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 | 3.4 °C | 15.4 °C | 92.46 mm |
| February | 5.5 °C | 17.7 °C | 80.77 mm |
| March | 8.9 °C | 21.5 °C | 92.46 mm |
| April | 12.9 °C | 25.6 °C | 84.33 mm |
| May | 17.8 °C | 29.3 °C | 118.11 mm |
| June | 21.6 °C | 32.9 °C | 97.03 mm |
| July | 23 °C | 34.9 °C | 58.42 mm |
| August | 22.7 °C | 35.4 °C | 74.68 mm |
| September | 19.5 °C | 32.2 °C | 90.42 mm |
| October | 13.8 °C | 27.1 °C | 111 mm |
| November | 8.4 °C | 20.9 °C | 93.98 mm |
| December | 4.2 °C | 16.3 °C | 101.09 mm |
| Annual | 13.5 °C | 25.8 °C | 1094.75 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 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |