McFall, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.3 °C (low) to 16.9 °C (high). Annual precipitation averages 993.1 Millimeters. McFall 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.2 °C | 1.2 °C | 25.91 mm |
| February | -7 °C | 4.1 °C | 36.58 mm |
| March | -1.2 °C | 10.9 °C | 58.42 mm |
| April | 4.6 °C | 17.2 °C | 96.01 mm |
| May | 11.1 °C | 22.8 °C | 143.76 mm |
| June | 16.6 °C | 28 °C | 134.62 mm |
| July | 18.9 °C | 30.4 °C | 118.36 mm |
| August | 17.6 °C | 29.6 °C | 107.44 mm |
| September | 12.7 °C | 25.5 °C | 101.85 mm |
| October | 5.9 °C | 18.7 °C | 80.52 mm |
| November | -0.5 °C | 10.7 °C | 49.78 mm |
| December | -6.2 °C | 3.7 °C | 39.88 mm |
| Annual | 5.3 °C | 16.9 °C | 993.13 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |