Edgerton, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.4 °F (low) to 64.6 °F (high). Annual precipitation averages 39.8 Inches. 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 | 17.2 °F | 37.4 °F | 1.16 in. |
| February | 21.2 °F | 42.7 °F | 1.65 in. |
| March | 31.2 °F | 54.6 °F | 2.3 in. |
| April | 41.4 °F | 65.2 °F | 3.87 in. |
| May | 52.8 °F | 74.7 °F | 5.36 in. |
| June | 62.6 °F | 83.9 °F | 5.01 in. |
| July | 66.6 °F | 88.2 °F | 5.49 in. |
| August | 64.3 °F | 86.8 °F | 4.31 in. |
| September | 55.4 °F | 79.3 °F | 3.66 in. |
| October | 43.0 °F | 67.7 °F | 3.19 in. |
| November | 31.5 °F | 53.6 °F | 2.07 in. |
| December | 21.8 °F | 41.6 °F | 1.75 in. |
| Annual | 42.4 °F | 64.6 °F | 39.82 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |