Emmitsburg, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.9 °C (low) to 17.7 °C (high). Annual precipitation averages 1153.4 Millimeters. Emmitsburg 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 | -5.5 °C | 4.2 °C | 85.6 mm |
| February | -4.7 °C | 6.2 °C | 65.79 mm |
| March | -0.9 °C | 11 °C | 96.01 mm |
| April | 4.6 °C | 17.8 °C | 92.46 mm |
| May | 10.1 °C | 22.8 °C | 108.71 mm |
| June | 15.3 °C | 27.6 °C | 104.65 mm |
| July | 17.8 °C | 30.2 °C | 108.2 mm |
| August | 16.7 °C | 29.1 °C | 90.42 mm |
| September | 12.8 °C | 25.6 °C | 128.78 mm |
| October | 6.3 °C | 19.1 °C | 95.76 mm |
| November | 0.8 °C | 12.6 °C | 84.33 mm |
| December | -2.8 °C | 6.6 °C | 92.71 mm |
| Annual | 5.9 °C | 17.7 °C | 1153.42 mm |
| 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 : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |