Madison, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.3 °F (low) to 66.4 °F (high). Annual precipitation averages 45.9 Inches. Madison is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.5 °F | 44.5 °F | 3.39 in. |
| February | 30.6 °F | 46.7 °F | 2.92 in. |
| March | 37.2 °F | 54.1 °F | 4.14 in. |
| April | 47.4 °F | 65.8 °F | 3.48 in. |
| May | 57.1 °F | 74.3 °F | 3.89 in. |
| June | 66.5 °F | 82.9 °F | 3.93 in. |
| July | 71.4 °F | 87.3 °F | 4.56 in. |
| August | 70.2 °F | 85.5 °F | 4.46 in. |
| September | 64.1 °F | 79.7 °F | 4.08 in. |
| October | 52.8 °F | 69.0 °F | 4.0 in. |
| November | 42.3 °F | 57.9 °F | 3.35 in. |
| December | 34.6 °F | 49.0 °F | 3.73 in. |
| Annual | 50.3 °F | 66.4 °F | 45.93 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |