Wagener, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11 °C (low) to 23.8 °C (high). Annual precipitation averages 1239.8 Millimeters. Wagener 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 | 1.1 °C | 13.8 °C | 106.43 mm |
| February | 2.4 °C | 15.9 °C | 97.28 mm |
| March | 5.7 °C | 19.9 °C | 108.97 mm |
| April | 10.2 °C | 24.3 °C | 83.57 mm |
| May | 15.1 °C | 28.2 °C | 85.85 mm |
| June | 19.4 °C | 31.6 °C | 133.6 mm |
| July | 21.2 °C | 32.7 °C | 120.14 mm |
| August | 20.7 °C | 31.9 °C | 128.78 mm |
| September | 17.6 °C | 29.2 °C | 108.2 mm |
| October | 11.2 °C | 24.3 °C | 83.82 mm |
| November | 5.2 °C | 19 °C | 80.52 mm |
| December | 2 °C | 14.8 °C | 102.62 mm |
| Annual | 11 °C | 23.8 °C | 1239.78 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |