Vale Summit, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.2 °C (low) to 14.9 °C (high). Annual precipitation averages 1142 Millimeters. Vale Summit is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.1 °C | 1.2 °C | 80.52 mm |
| February | -6.4 °C | 3.1 °C | 76.45 mm |
| March | -2.8 °C | 7.8 °C | 101.6 mm |
| April | 3 °C | 15.8 °C | 103.12 mm |
| May | 8.7 °C | 20.6 °C | 122.68 mm |
| June | 13.3 °C | 24.8 °C | 116.84 mm |
| July | 15.6 °C | 27.1 °C | 95.76 mm |
| August | 14.7 °C | 26.3 °C | 88.65 mm |
| September | 11.1 °C | 22.8 °C | 106.93 mm |
| October | 5.2 °C | 16.5 °C | 84.33 mm |
| November | -0.2 °C | 9.3 °C | 78.23 mm |
| December | -4.3 °C | 3.6 °C | 86.87 mm |
| Annual | 4.2 °C | 14.9 °C | 1141.98 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |