Houston, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.5 °C (low) to 22.9 °C (high). Annual precipitation averages 1478.8 Millimeters. Houston is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.1 °C | 11.3 °C | 130.3 mm |
| February | 1.5 °C | 13.9 °C | 133.1 mm |
| March | 5.4 °C | 18.8 °C | 132.33 mm |
| April | 9.8 °C | 23.3 °C | 152.91 mm |
| May | 15 °C | 27.4 °C | 134.62 mm |
| June | 19.3 °C | 30.8 °C | 134.87 mm |
| July | 21.2 °C | 32.6 °C | 113.28 mm |
| August | 20.5 °C | 32.4 °C | 102.87 mm |
| September | 16.8 °C | 29.7 °C | 95.76 mm |
| October | 10.2 °C | 24.3 °C | 90.93 mm |
| November | 4.4 °C | 17.7 °C | 108.46 mm |
| December | 1.4 °C | 12.8 °C | 149.35 mm |
| Annual | 10.5 °C | 22.9 °C | 1478.78 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |