Tilghmanton, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.3 °F (low) to 65.1 °F (high). Annual precipitation averages 41.6 Inches. Tilghmanton 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 | 23.1 °F | 41.1 °F | 2.95 in. |
| February | 24.4 °F | 44.7 °F | 2.34 in. |
| March | 31.2 °F | 53.3 °F | 3.51 in. |
| April | 41.5 °F | 65.6 °F | 3.53 in. |
| May | 51.3 °F | 74.3 °F | 4.25 in. |
| June | 60.0 °F | 83.0 °F | 3.89 in. |
| July | 64.4 °F | 87.4 °F | 3.77 in. |
| August | 62.7 °F | 85.7 °F | 3.45 in. |
| September | 55.7 °F | 78.8 °F | 4.14 in. |
| October | 43.9 °F | 67.2 °F | 3.47 in. |
| November | 34.2 °F | 55.5 °F | 2.98 in. |
| December | 27.2 °F | 44.6 °F | 3.32 in. |
| Annual | 43.3 °F | 65.1 °F | 41.6 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |