Monroe, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.6 °F (low) to 72.2 °F (high). Annual precipitation averages 45.8 Inches. Monroe is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.6 °F | 52.6 °F | 3.9 in. |
| February | 34.2 °F | 56.5 °F | 3.2 in. |
| March | 40.9 °F | 64.0 °F | 4.27 in. |
| April | 49.4 °F | 73.1 °F | 3.64 in. |
| May | 58.3 °F | 80.0 °F | 3.21 in. |
| June | 66.3 °F | 86.8 °F | 4.31 in. |
| July | 69.9 °F | 90.2 °F | 3.9 in. |
| August | 68.6 °F | 88.3 °F | 4.39 in. |
| September | 62.8 °F | 82.9 °F | 4.32 in. |
| October | 50.7 °F | 73.5 °F | 3.6 in. |
| November | 40.0 °F | 63.4 °F | 3.24 in. |
| December | 34.4 °F | 55.3 °F | 3.8 in. |
| Annual | 50.6 °F | 72.2 °F | 45.78 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |