Edgerton, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.8 °C (low) to 18.1 °C (high). Annual precipitation averages 1011.4 Millimeters. Edgerton 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 | -8.2 °C | 3 °C | 29.46 mm |
| February | -6 °C | 5.9 °C | 41.91 mm |
| March | -0.4 °C | 12.6 °C | 58.42 mm |
| April | 5.2 °C | 18.4 °C | 98.3 mm |
| May | 11.6 °C | 23.7 °C | 136.14 mm |
| June | 17 °C | 28.8 °C | 127.25 mm |
| July | 19.2 °C | 31.2 °C | 139.45 mm |
| August | 17.9 °C | 30.4 °C | 109.47 mm |
| September | 13 °C | 26.3 °C | 92.96 mm |
| October | 6.1 °C | 19.8 °C | 81.03 mm |
| November | -0.3 °C | 12 °C | 52.58 mm |
| December | -5.7 °C | 5.3 °C | 44.45 mm |
| Annual | 5.8 °C | 18.1 °C | 1011.42 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 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 |