Oyster Creek, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 63 °F (low) to 78.5 °F (high). Annual precipitation averages 47.1 Inches. Oyster Creek is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 46.1 °F | 63.5 °F | 4.03 in. |
| February | 49.6 °F | 66.3 °F | 2.6 in. |
| March | 55.8 °F | 71.8 °F | 2.93 in. |
| April | 62.3 °F | 77.3 °F | 3.02 in. |
| May | 69.9 °F | 83.4 °F | 3.73 in. |
| June | 75.5 °F | 88.9 °F | 4.47 in. |
| July | 77.1 °F | 90.6 °F | 3.7 in. |
| August | 77.0 °F | 91.6 °F | 5.0 in. |
| September | 73.1 °F | 88.0 °F | 5.98 in. |
| October | 65.4 °F | 81.7 °F | 3.95 in. |
| November | 55.8 °F | 73.0 °F | 4.12 in. |
| December | 48.0 °F | 66.0 °F | 3.59 in. |
| Annual | 63 °F | 78.5 °F | 47.12 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 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |