Shannon Hills, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.4 °F (low) to 72.9 °F (high). Annual precipitation averages 54.5 Inches. Shannon Hills 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 | 31.2 °F | 50.9 °F | 3.94 in. |
| February | 34.4 °F | 55.6 °F | 4.29 in. |
| March | 41.8 °F | 64.2 °F | 5.2 in. |
| April | 50.4 °F | 73.5 °F | 5.69 in. |
| May | 60.3 °F | 80.9 °F | 5.57 in. |
| June | 68.4 °F | 88.6 °F | 3.79 in. |
| July | 71.7 °F | 92.1 °F | 3.94 in. |
| August | 70.4 °F | 92.0 °F | 3.39 in. |
| September | 63.1 °F | 85.8 °F | 3.6 in. |
| October | 51.1 °F | 75.1 °F | 4.66 in. |
| November | 40.7 °F | 62.6 °F | 5.07 in. |
| December | 33.7 °F | 53.7 °F | 5.33 in. |
| Annual | 51.4 °F | 72.9 °F | 54.47 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |