Rosman, North Carolina has a Temperate Oceanic Climate climate (Köppen classification: Cfb). Average annual temperatures range from 43 °F (low) to 67.3 °F (high). Annual precipitation averages 74.4 Inches. Rosman is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.1 °F | 48.4 °F | 6.72 in. |
| February | 27.8 °F | 52.4 °F | 5.7 in. |
| March | 33.4 °F | 60.0 °F | 5.97 in. |
| April | 41.1 °F | 68.6 °F | 6.16 in. |
| May | 49.9 °F | 75.1 °F | 5.63 in. |
| June | 57.6 °F | 80.7 °F | 5.96 in. |
| July | 61.6 °F | 83.4 °F | 6.34 in. |
| August | 60.7 °F | 82.1 °F | 7.26 in. |
| September | 54.6 °F | 77.4 °F | 6.34 in. |
| October | 42.8 °F | 68.8 °F | 5.25 in. |
| November | 32.5 °F | 59.4 °F | 5.93 in. |
| December | 28.6 °F | 51.0 °F | 7.14 in. |
| Annual | 43 °F | 67.3 °F | 74.4 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfb - Temperate Oceanic Climate |