Fairdealing, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.3 °F (low) to 68.8 °F (high). Annual precipitation averages 50.6 Inches. Fairdealing is located in USDA Plant Hardiness Zone 7a. 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 | 25.6 °F | 44.3 °F | 3.46 in. |
| February | 28.7 °F | 49.6 °F | 3.51 in. |
| March | 36.9 °F | 59.0 °F | 4.56 in. |
| April | 46.9 °F | 70.3 °F | 5.68 in. |
| May | 56.7 °F | 78.3 °F | 5.36 in. |
| June | 65.6 °F | 86.5 °F | 3.69 in. |
| July | 69.2 °F | 89.6 °F | 4.4 in. |
| August | 67.2 °F | 88.8 °F | 3.51 in. |
| September | 58.9 °F | 82.5 °F | 3.61 in. |
| October | 46.6 °F | 71.6 °F | 3.88 in. |
| November | 36.4 °F | 58.3 °F | 4.7 in. |
| December | 28.7 °F | 47.2 °F | 4.2 in. |
| Annual | 47.3 °F | 68.8 °F | 50.56 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 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |