Cranfills Gap, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.1 °C (low) to 25.2 °C (high). Annual precipitation averages 863.6 Millimeters. Cranfills Gap 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 | 1.2 °C | 14.6 °C | 54.86 mm |
| February | 3.2 °C | 16.8 °C | 64.52 mm |
| March | 7.3 °C | 20.7 °C | 72.39 mm |
| April | 11.4 °C | 25.1 °C | 69.34 mm |
| May | 16.7 °C | 28.9 °C | 111.76 mm |
| June | 20.7 °C | 32.9 °C | 96.27 mm |
| July | 22.3 °C | 35.2 °C | 48.26 mm |
| August | 22.1 °C | 35.5 °C | 62.74 mm |
| September | 18.3 °C | 31.7 °C | 74.17 mm |
| October | 12.5 °C | 26.3 °C | 91.95 mm |
| November | 6.7 °C | 19.9 °C | 63.5 mm |
| December | 2.2 °C | 15.3 °C | 53.85 mm |
| Annual | 12.1 °C | 25.2 °C | 863.61 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 |