Reid, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.7 °F (low) to 64.4 °F (high). Annual precipitation averages 40.1 Inches. Reid 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 | 23.5 °F | 40.3 °F | 3.01 in. |
| February | 24.6 °F | 43.8 °F | 2.28 in. |
| March | 31.8 °F | 52.4 °F | 3.42 in. |
| April | 41.9 °F | 64.7 °F | 3.6 in. |
| May | 51.5 °F | 73.8 °F | 3.87 in. |
| June | 60.4 °F | 82.5 °F | 3.6 in. |
| July | 64.8 °F | 86.9 °F | 3.45 in. |
| August | 63.0 °F | 85.2 °F | 3.26 in. |
| September | 56.0 °F | 78.3 °F | 3.87 in. |
| October | 44.7 °F | 66.5 °F | 3.58 in. |
| November | 34.9 °F | 54.8 °F | 2.89 in. |
| December | 27.6 °F | 43.9 °F | 3.3 in. |
| Annual | 43.7 °F | 64.4 °F | 40.13 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |