Augusta, 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 18.9 °C (high). Annual precipitation averages 1121.9 Millimeters. Augusta 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.7 °C | 4.4 °C | 65.28 mm |
| February | -3.8 °C | 7.5 °C | 61.47 mm |
| March | 0.9 °C | 13.2 °C | 92.46 mm |
| April | 6.8 °C | 19.7 °C | 119.63 mm |
| May | 12.7 °C | 24.4 °C | 134.87 mm |
| June | 17.7 °C | 28.9 °C | 113.54 mm |
| July | 20 °C | 31.2 °C | 102.62 mm |
| August | 18.7 °C | 30.6 °C | 96.52 mm |
| September | 14.1 °C | 26.9 °C | 91.95 mm |
| October | 7.2 °C | 20.6 °C | 85.85 mm |
| November | 1.5 °C | 13.1 °C | 88.65 mm |
| December | -3.3 °C | 6.8 °C | 69.09 mm |
| Annual | 7.2 °C | 18.9 °C | 1121.93 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 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 |