Midlothian, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.9 °F (low) to 59.7 °F (high). Annual precipitation averages 44.8 Inches. Midlothian is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.9 °F | 35.1 °F | 3.14 in. |
| February | 21.0 °F | 38.5 °F | 3.0 in. |
| March | 27.6 °F | 47.1 °F | 4.05 in. |
| April | 37.7 °F | 61.4 °F | 4.11 in. |
| May | 47.9 °F | 70.0 °F | 4.86 in. |
| June | 56.2 °F | 77.5 °F | 4.65 in. |
| July | 60.2 °F | 81.5 °F | 3.76 in. |
| August | 58.7 °F | 80.2 °F | 3.37 in. |
| September | 52.0 °F | 73.9 °F | 3.93 in. |
| October | 41.4 °F | 62.4 °F | 3.38 in. |
| November | 31.8 °F | 49.7 °F | 3.12 in. |
| December | 24.7 °F | 39.4 °F | 3.45 in. |
| Annual | 39.9 °F | 59.7 °F | 44.82 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |