Spring Gap, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.9 °F (low) to 65.5 °F (high). Annual precipitation averages 39.5 Inches. Spring Gap 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 | 23.4 °F | 40.8 °F | 2.69 in. |
| February | 25.0 °F | 44.8 °F | 2.44 in. |
| March | 31.4 °F | 53.8 °F | 3.46 in. |
| April | 40.8 °F | 66.9 °F | 3.48 in. |
| May | 50.4 °F | 75.7 °F | 4.28 in. |
| June | 59.3 °F | 83.3 °F | 4.07 in. |
| July | 63.4 °F | 87.8 °F | 3.57 in. |
| August | 61.9 °F | 86.2 °F | 3.25 in. |
| September | 54.8 °F | 79.6 °F | 3.68 in. |
| October | 42.8 °F | 67.8 °F | 2.88 in. |
| November | 33.5 °F | 55.0 °F | 2.62 in. |
| December | 27.6 °F | 44.3 °F | 3.05 in. |
| Annual | 42.9 °F | 65.5 °F | 39.47 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 |