Calico Rock, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.6 °F (low) to 70.4 °F (high). Annual precipitation averages 48.3 Inches. Calico Rock is located in USDA Plant Hardiness Zone 7b. 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 | 25.1 °F | 48.0 °F | 3.24 in. |
| February | 28.2 °F | 53.1 °F | 3.22 in. |
| March | 35.7 °F | 61.8 °F | 4.62 in. |
| April | 44.4 °F | 71.5 °F | 5.5 in. |
| May | 54.1 °F | 77.9 °F | 5.2 in. |
| June | 62.3 °F | 85.9 °F | 3.57 in. |
| July | 66.1 °F | 90.1 °F | 3.67 in. |
| August | 64.6 °F | 89.6 °F | 3.48 in. |
| September | 57.1 °F | 83.2 °F | 3.75 in. |
| October | 45.3 °F | 72.8 °F | 3.84 in. |
| November | 35.5 °F | 60.6 °F | 4.31 in. |
| December | 28.2 °F | 50.3 °F | 3.92 in. |
| Annual | 45.6 °F | 70.4 °F | 48.32 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |