Arcola, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.7 °F (low) to 67.2 °F (high). Annual precipitation averages 45.7 Inches. Arcola is located in USDA Plant Hardiness Zone 7a. 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 | 22.7 °F | 42.6 °F | 2.02 in. |
| February | 26.3 °F | 47.7 °F | 2.14 in. |
| March | 35.0 °F | 57.3 °F | 3.27 in. |
| April | 44.4 °F | 67.2 °F | 4.89 in. |
| May | 54.8 °F | 75.5 °F | 6.11 in. |
| June | 64.1 °F | 84.3 °F | 5.01 in. |
| July | 68.2 °F | 89.1 °F | 4.32 in. |
| August | 66.3 °F | 88.7 °F | 3.63 in. |
| September | 57.9 °F | 81.1 °F | 4.48 in. |
| October | 46.1 °F | 69.7 °F | 3.73 in. |
| November | 35.5 °F | 56.8 °F | 3.44 in. |
| December | 26.7 °F | 46.2 °F | 2.66 in. |
| Annual | 45.7 °F | 67.2 °F | 45.7 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 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |