Edgerton, Wyoming has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Annual precipitation averages 333.2 Millimeters. Edgerton is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.2 °C | 2.4 °C | 8.38 mm |
| February | -9.4 °C | 3.5 °C | 13.21 mm |
| March | -5.1 °C | 9.5 °C | 29.72 mm |
| April | -1.3 °C | 13.6 °C | 37.59 mm |
| May | 3.7 °C | 19.1 °C | 66.8 mm |
| June | 8.7 °C | 25.9 °C | 47.24 mm |
| July | 12.3 °C | 31.3 °C | 35.81 mm |
| August | 11.2 °C | 30.6 °C | 16 mm |
| September | 6 °C | 24.8 °C | 22.61 mm |
| October | -0.1 °C | 16.3 °C | 32.51 mm |
| November | -5.5 °C | 7.8 °C | 11.43 mm |
| December | -9.9 °C | 2.3 °C | 11.94 mm |
| Annual | 0 °C | 15.6 °C | 333.24 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |