Macon, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.4 °F (low) to 63.2 °F (high). Annual precipitation averages 42.4 Inches. Macon is located in USDA Plant Hardiness Zone 6a. 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 | 17.1 °F | 35.2 °F | 1.7 in. |
| February | 20.8 °F | 40.5 °F | 2.01 in. |
| March | 30.8 °F | 52.4 °F | 2.69 in. |
| April | 41.7 °F | 63.9 °F | 4.46 in. |
| May | 52.8 °F | 73.6 °F | 5.48 in. |
| June | 62.3 °F | 82.5 °F | 5.71 in. |
| July | 66.3 °F | 87.0 °F | 4.5 in. |
| August | 63.9 °F | 85.9 °F | 3.95 in. |
| September | 55.0 °F | 78.5 °F | 4.06 in. |
| October | 43.7 °F | 66.4 °F | 3.39 in. |
| November | 32.4 °F | 52.4 °F | 2.56 in. |
| December | 22.5 °F | 39.8 °F | 1.9 in. |
| Annual | 42.4 °F | 63.2 °F | 42.41 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |