Runaway Bay, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52.3 °F (low) to 76 °F (high). Annual precipitation averages 34.2 Inches. Runaway Bay 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.8 °F | 56.0 °F | 1.77 in. |
| February | 35.7 °F | 59.6 °F | 2.29 in. |
| March | 43.3 °F | 67.8 °F | 2.9 in. |
| April | 50.7 °F | 75.5 °F | 3.11 in. |
| May | 60.8 °F | 82.4 °F | 4.16 in. |
| June | 68.9 °F | 90.6 °F | 3.84 in. |
| July | 72.2 °F | 95.3 °F | 2.32 in. |
| August | 71.5 °F | 95.6 °F | 2.38 in. |
| September | 64.0 °F | 88.1 °F | 3.25 in. |
| October | 52.3 °F | 78.0 °F | 3.8 in. |
| November | 42.2 °F | 66.2 °F | 2.2 in. |
| December | 33.6 °F | 57.3 °F | 2.18 in. |
| Annual | 52.3 °F | 76 °F | 34.2 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |