Premont, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 61.6 °F (low) to 84.5 °F (high). Annual precipitation averages 25.6 Inches. Premont is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 45.5 °F | 68.9 °F | 1.17 in. |
| February | 49.7 °F | 73.4 °F | 1.26 in. |
| March | 55.9 °F | 78.8 °F | 1.6 in. |
| April | 61.9 °F | 85.5 °F | 1.53 in. |
| May | 69.3 °F | 90.5 °F | 2.88 in. |
| June | 73.5 °F | 95.2 °F | 2.78 in. |
| July | 74.2 °F | 96.6 °F | 2.59 in. |
| August | 74.3 °F | 97.8 °F | 2.18 in. |
| September | 70.8 °F | 92.3 °F | 4.52 in. |
| October | 62.6 °F | 86.6 °F | 2.38 in. |
| November | 53.8 °F | 77.4 °F | 1.34 in. |
| December | 47.3 °F | 70.4 °F | 1.39 in. |
| Annual | 61.6 °F | 84.5 °F | 25.62 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |