Spencer, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.9 °C (low) to 21.5 °C (high). Annual precipitation averages 1102.4 Millimeters. Spencer 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.7 °C | 10.4 °C | 87.12 mm |
| February | -0.6 °C | 12.6 °C | 73.15 mm |
| March | 3.2 °C | 16.8 °C | 105.16 mm |
| April | 8.2 °C | 21.9 °C | 97.03 mm |
| May | 13.3 °C | 25.8 °C | 82.04 mm |
| June | 18 °C | 29.7 °C | 111.25 mm |
| July | 20.2 °C | 31.4 °C | 101.35 mm |
| August | 19.3 °C | 30.6 °C | 106.93 mm |
| September | 15.8 °C | 27.5 °C | 97.28 mm |
| October | 8.7 °C | 22.3 °C | 77.98 mm |
| November | 2.6 °C | 16.7 °C | 79.25 mm |
| December | -0.4 °C | 12.1 °C | 83.82 mm |
| Annual | 8.9 °C | 21.5 °C | 1102.36 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 7b : -15°C to -12.2°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |