Miami, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.4 °C (low) to 17.9 °C (high). Annual precipitation averages 1039.9 Millimeters. Miami is located in USDA Plant Hardiness Zone 6a. 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 | -7.4 °C | 2.8 °C | 35.56 mm |
| February | -5.2 °C | 5.7 °C | 47.24 mm |
| March | 0.2 °C | 12.1 °C | 69.6 mm |
| April | 5.9 °C | 18.3 °C | 106.17 mm |
| May | 12.2 °C | 23.6 °C | 138.18 mm |
| June | 17.5 °C | 28.4 °C | 133.86 mm |
| July | 19.7 °C | 30.7 °C | 114.55 mm |
| August | 18.3 °C | 29.9 °C | 102.11 mm |
| September | 13.3 °C | 26.1 °C | 100.58 mm |
| October | 6.8 °C | 19.6 °C | 82.8 mm |
| November | 0.6 °C | 11.9 °C | 62.74 mm |
| December | -4.6 °C | 5.2 °C | 46.48 mm |
| Annual | 6.4 °C | 17.9 °C | 1039.87 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |