Spring Gap, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6 °C (low) to 18.6 °C (high). Annual precipitation averages 1002.5 Millimeters. 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 | -4.8 °C | 4.9 °C | 68.33 mm |
| February | -3.9 °C | 7.1 °C | 61.98 mm |
| March | -0.3 °C | 12.1 °C | 87.88 mm |
| April | 4.9 °C | 19.4 °C | 88.39 mm |
| May | 10.2 °C | 24.3 °C | 108.71 mm |
| June | 15.2 °C | 28.5 °C | 103.38 mm |
| July | 17.4 °C | 31 °C | 90.68 mm |
| August | 16.6 °C | 30.1 °C | 82.55 mm |
| September | 12.7 °C | 26.4 °C | 93.47 mm |
| October | 6 °C | 19.9 °C | 73.15 mm |
| November | 0.8 °C | 12.8 °C | 66.55 mm |
| December | -2.4 °C | 6.8 °C | 77.47 mm |
| Annual | 6 °C | 18.6 °C | 1002.54 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |