Lonaconing, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.4 °F (low) to 61 °F (high). Annual precipitation averages 43.5 Inches. Lonaconing is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.9 °F | 36.4 °F | 3.07 in. |
| February | 21.9 °F | 39.8 °F | 2.88 in. |
| March | 28.5 °F | 48.5 °F | 3.75 in. |
| April | 38.3 °F | 62.7 °F | 3.88 in. |
| May | 48.0 °F | 71.2 °F | 4.74 in. |
| June | 56.5 °F | 78.8 °F | 4.52 in. |
| July | 60.6 °F | 82.9 °F | 3.89 in. |
| August | 59.1 °F | 81.6 °F | 3.71 in. |
| September | 52.3 °F | 75.3 °F | 3.92 in. |
| October | 41.6 °F | 63.6 °F | 3.11 in. |
| November | 32.1 °F | 50.9 °F | 2.81 in. |
| December | 25.1 °F | 40.6 °F | 3.25 in. |
| Annual | 40.4 °F | 61 °F | 43.53 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |