Jewett, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55.7 °F (low) to 78.4 °F (high). Annual precipitation averages 41.6 Inches. Jewett 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 | 37.5 °F | 59.6 °F | 3.42 in. |
| February | 41.3 °F | 63.6 °F | 3.41 in. |
| March | 47.6 °F | 70.8 °F | 3.69 in. |
| April | 54.6 °F | 78.0 °F | 3.5 in. |
| May | 63.3 °F | 85.0 °F | 4.18 in. |
| June | 70.4 °F | 91.4 °F | 3.47 in. |
| July | 73.1 °F | 95.2 °F | 1.77 in. |
| August | 72.2 °F | 96.0 °F | 2.62 in. |
| September | 66.6 °F | 90.0 °F | 3.52 in. |
| October | 56.3 °F | 80.8 °F | 4.37 in. |
| November | 46.7 °F | 69.3 °F | 3.62 in. |
| December | 38.8 °F | 60.9 °F | 4.03 in. |
| Annual | 55.7 °F | 78.4 °F | 41.6 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |