Chester, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55.7 °F (low) to 78.7 °F (high). Annual precipitation averages 56 Inches. Chester 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.2 °F | 61.1 °F | 4.97 in. |
| February | 42.0 °F | 65.1 °F | 4.14 in. |
| March | 48.2 °F | 71.8 °F | 4.54 in. |
| April | 54.9 °F | 78.3 °F | 4.34 in. |
| May | 63.4 °F | 85.1 °F | 4.85 in. |
| June | 69.7 °F | 91.0 °F | 5.32 in. |
| July | 71.9 °F | 93.9 °F | 3.89 in. |
| August | 71.4 °F | 94.5 °F | 4.41 in. |
| September | 66.5 °F | 89.5 °F | 4.08 in. |
| October | 56.0 °F | 80.9 °F | 5.19 in. |
| November | 46.5 °F | 70.3 °F | 4.86 in. |
| December | 40.0 °F | 62.4 °F | 5.36 in. |
| Annual | 55.7 °F | 78.7 °F | 55.95 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |