Edgerton, Wyoming has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.1 °F (low) to 60.1 °F (high). Annual precipitation averages 13.1 Inches. 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 | 13.6 °F | 36.3 °F | 0.33 in. |
| February | 15.1 °F | 38.3 °F | 0.52 in. |
| March | 22.9 °F | 49.1 °F | 1.17 in. |
| April | 29.7 °F | 56.5 °F | 1.48 in. |
| May | 38.7 °F | 66.3 °F | 2.63 in. |
| June | 47.6 °F | 78.6 °F | 1.86 in. |
| July | 54.2 °F | 88.3 °F | 1.41 in. |
| August | 52.1 °F | 87.0 °F | 0.63 in. |
| September | 42.8 °F | 76.6 °F | 0.89 in. |
| October | 31.8 °F | 61.3 °F | 1.28 in. |
| November | 22.1 °F | 46.1 °F | 0.45 in. |
| December | 14.1 °F | 36.2 °F | 0.47 in. |
| Annual | 32.1 °F | 60.1 °F | 13.12 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |