Missouri City, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 60.9 °F (low) to 79.4 °F (high). Annual precipitation averages 54.5 Inches. Missouri City is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 44.5 °F | 63.0 °F | 4.21 in. |
| February | 48.2 °F | 66.5 °F | 3.13 in. |
| March | 54.1 °F | 72.7 °F | 3.62 in. |
| April | 60.2 °F | 78.9 °F | 4.15 in. |
| May | 68.0 °F | 85.5 °F | 5.27 in. |
| June | 73.7 °F | 90.9 °F | 5.54 in. |
| July | 75.2 °F | 92.8 °F | 4.12 in. |
| August | 75.2 °F | 93.6 °F | 5.61 in. |
| September | 71.0 °F | 89.2 °F | 5.35 in. |
| October | 62.1 °F | 82.3 °F | 4.71 in. |
| November | 52.4 °F | 72.3 °F | 4.61 in. |
| December | 46.2 °F | 65.0 °F | 4.2 in. |
| Annual | 60.9 °F | 79.4 °F | 54.52 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 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |