Mount Moriah, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.5 °C (low) to 16.9 °C (high). Annual precipitation averages 992.4 Millimeters. Mount Moriah 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 °C | 1.1 °C | 25.91 mm |
| February | -6.8 °C | 3.9 °C | 35.56 mm |
| March | -1 °C | 10.8 °C | 57.4 mm |
| April | 4.9 °C | 17.2 °C | 99.06 mm |
| May | 11.4 °C | 22.8 °C | 141.73 mm |
| June | 16.8 °C | 28.1 °C | 133.6 mm |
| July | 19.1 °C | 30.4 °C | 119.13 mm |
| August | 17.7 °C | 29.6 °C | 110.49 mm |
| September | 12.8 °C | 25.6 °C | 98.3 mm |
| October | 6.1 °C | 18.7 °C | 80.52 mm |
| November | -0.4 °C | 10.6 °C | 51.56 mm |
| December | -6.1 °C | 3.8 °C | 39.12 mm |
| Annual | 5.5 °C | 16.9 °C | 992.38 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 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 |