Manning, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.5 °C (low) to 24.2 °C (high). Annual precipitation averages 1298.7 Millimeters. Manning is located in USDA Plant Hardiness Zone 8b. 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 | 1.5 °C | 14.1 °C | 105.66 mm |
| February | 2.8 °C | 15.9 °C | 101.35 mm |
| March | 6 °C | 20.1 °C | 98.04 mm |
| April | 10.7 °C | 24.8 °C | 94.49 mm |
| May | 15.4 °C | 28.6 °C | 96.77 mm |
| June | 19.9 °C | 31.6 °C | 134.87 mm |
| July | 21.8 °C | 33.3 °C | 132.84 mm |
| August | 21.1 °C | 32.3 °C | 147.57 mm |
| September | 18 °C | 29.4 °C | 127 mm |
| October | 11.7 °C | 24.8 °C | 90.68 mm |
| November | 5.7 °C | 19.6 °C | 71.37 mm |
| December | 2.9 °C | 15.5 °C | 98.04 mm |
| Annual | 11.5 °C | 24.2 °C | 1298.68 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°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 |