Shannon, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.8 °C (low) to 22.9 °C (high). Annual precipitation averages 1222.3 Millimeters. Shannon 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 | 0.2 °C | 12.2 °C | 87.63 mm |
| February | 1.3 °C | 14.1 °C | 79.25 mm |
| March | 5 °C | 18.4 °C | 90.68 mm |
| April | 10 °C | 23.4 °C | 86.36 mm |
| May | 15 °C | 27.4 °C | 86.11 mm |
| June | 19.8 °C | 31 °C | 127.25 mm |
| July | 21.8 °C | 32.6 °C | 130.05 mm |
| August | 20.9 °C | 31.6 °C | 129.79 mm |
| September | 17.8 °C | 28.7 °C | 145.29 mm |
| October | 11 °C | 23.7 °C | 85.6 mm |
| November | 4.9 °C | 18.2 °C | 83.57 mm |
| December | 1.7 °C | 13.9 °C | 90.68 mm |
| Annual | 10.8 °C | 22.9 °C | 1222.26 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 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |