Benjamin, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.2 °C (low) to 25 °C (high). Annual precipitation averages 633.5 Millimeters. Benjamin is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.7 °C | 13.3 °C | 26.16 mm |
| February | 0 °C | 15.5 °C | 30.99 mm |
| March | 4.6 °C | 20.4 °C | 43.69 mm |
| April | 9.1 °C | 25.3 °C | 55.63 mm |
| May | 15.1 °C | 29.8 °C | 82.3 mm |
| June | 20.1 °C | 33.7 °C | 89.66 mm |
| July | 22.2 °C | 36.1 °C | 46.23 mm |
| August | 21.5 °C | 35.7 °C | 61.21 mm |
| September | 17.2 °C | 31.3 °C | 71.63 mm |
| October | 10.8 °C | 25.8 °C | 57.91 mm |
| November | 4.2 °C | 19 °C | 40.64 mm |
| December | -0.7 °C | 13.9 °C | 27.43 mm |
| Annual | 10.2 °C | 25 °C | 633.48 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |