Spotsylvania Courthouse, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.3 °C (low) to 20.1 °C (high). Annual precipitation averages 1146 Millimeters. Spotsylvania Courthouse is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.7 °C | 7.9 °C | 81.53 mm |
| February | -2.8 °C | 9.8 °C | 71.37 mm |
| March | 0.8 °C | 14.3 °C | 97.54 mm |
| April | 6.3 °C | 20.4 °C | 83.82 mm |
| May | 11.7 °C | 24.7 °C | 104.39 mm |
| June | 16.6 °C | 29.1 °C | 109.47 mm |
| July | 19.1 °C | 31.5 °C | 113.54 mm |
| August | 18.1 °C | 30.4 °C | 98.04 mm |
| September | 14.3 °C | 26.9 °C | 116.84 mm |
| October | 7.4 °C | 21.1 °C | 94.74 mm |
| November | 1.7 °C | 15.1 °C | 83.31 mm |
| December | -1.9 °C | 9.8 °C | 91.44 mm |
| Annual | 7.3 °C | 20.1 °C | 1146.03 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |