La Plata, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.8 °F (low) to 67.4 °F (high). Annual precipitation averages 46.2 Inches. La Plata is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.5 °F | 45.0 °F | 3.05 in. |
| February | 28.3 °F | 48.7 °F | 2.76 in. |
| March | 34.8 °F | 56.9 °F | 3.82 in. |
| April | 44.6 °F | 68.6 °F | 3.41 in. |
| May | 54.0 °F | 75.9 °F | 4.23 in. |
| June | 63.0 °F | 83.4 °F | 4.52 in. |
| July | 67.9 °F | 87.5 °F | 4.53 in. |
| August | 66.2 °F | 85.8 °F | 4.28 in. |
| September | 59.9 °F | 79.8 °F | 4.69 in. |
| October | 47.9 °F | 69.1 °F | 3.92 in. |
| November | 37.3 °F | 59.0 °F | 3.31 in. |
| December | 30.7 °F | 48.8 °F | 3.72 in. |
| Annual | 46.8 °F | 67.4 °F | 46.24 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |