Middlebrook, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 43.1 °F (low) to 63.4 °F (high). Annual precipitation averages 43.7 Inches. Middlebrook is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.6 °F | 41.4 °F | 3.24 in. |
| February | 25.8 °F | 45.1 °F | 2.77 in. |
| March | 31.9 °F | 52.7 °F | 3.74 in. |
| April | 42.0 °F | 63.8 °F | 3.66 in. |
| May | 51.0 °F | 71.9 °F | 4.6 in. |
| June | 59.1 °F | 79.9 °F | 4.44 in. |
| July | 62.7 °F | 83.6 °F | 4.35 in. |
| August | 61.1 °F | 82.1 °F | 3.66 in. |
| September | 54.6 °F | 76.1 °F | 3.79 in. |
| October | 43.4 °F | 65.6 °F | 2.94 in. |
| November | 34.1 °F | 54.2 °F | 3.09 in. |
| December | 27.6 °F | 44.9 °F | 3.42 in. |
| Annual | 43.1 °F | 63.4 °F | 43.7 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |