Lakeway, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.1 °C (low) to 26.1 °C (high). Annual precipitation averages 882.9 Millimeters. Lakeway 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 | 2.8 °C | 16.2 °C | 59.44 mm |
| February | 4.9 °C | 18.1 °C | 50.8 mm |
| March | 8.8 °C | 21.9 °C | 71.88 mm |
| April | 12.7 °C | 25.9 °C | 66.04 mm |
| May | 17.6 °C | 29.5 °C | 113.28 mm |
| June | 21.1 °C | 32.9 °C | 84.33 mm |
| July | 22.3 °C | 35 °C | 53.85 mm |
| August | 22.2 °C | 35.7 °C | 61.98 mm |
| September | 19.3 °C | 32.2 °C | 87.63 mm |
| October | 13.7 °C | 27.4 °C | 97.79 mm |
| November | 8.1 °C | 21.1 °C | 73.41 mm |
| December | 3.6 °C | 16.8 °C | 62.48 mm |
| Annual | 13.1 °C | 26.1 °C | 882.91 mm |
| 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 : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |