Frankclay, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.2 °C (low) to 19.1 °C (high). Annual precipitation averages 1142.5 Millimeters. Frankclay is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.2 °C | 5.4 °C | 67.56 mm |
| February | -3.4 °C | 8.3 °C | 67.06 mm |
| March | 1.1 °C | 13.7 °C | 98.04 mm |
| April | 6.8 °C | 19.9 °C | 134.37 mm |
| May | 12.3 °C | 24.3 °C | 136.14 mm |
| June | 17 °C | 28.8 °C | 102.36 mm |
| July | 19.3 °C | 30.8 °C | 99.57 mm |
| August | 18.2 °C | 30.5 °C | 90.17 mm |
| September | 13.8 °C | 26.8 °C | 85.6 mm |
| October | 7.4 °C | 20.7 °C | 85.34 mm |
| November | 1.6 °C | 13.3 °C | 99.57 mm |
| December | -2.9 °C | 7.2 °C | 76.71 mm |
| Annual | 7.2 °C | 19.1 °C | 1142.49 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |