Evansville, Wyoming has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.8 °F (low) to 60.8 °F (high). Annual precipitation averages 14.1 Inches. Evansville is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.8 °F | 38.1 °F | 0.51 in. |
| February | 17.6 °F | 39.7 °F | 0.76 in. |
| March | 24.8 °F | 49.9 °F | 1.14 in. |
| April | 30.8 °F | 57.2 °F | 1.79 in. |
| May | 39.7 °F | 67.0 °F | 2.55 in. |
| June | 48.6 °F | 79.6 °F | 1.5 in. |
| July | 55.9 °F | 88.6 °F | 1.12 in. |
| August | 53.7 °F | 86.9 °F | 0.81 in. |
| September | 43.9 °F | 76.4 °F | 1.11 in. |
| October | 33.1 °F | 61.0 °F | 1.49 in. |
| November | 23.9 °F | 47.5 °F | 0.7 in. |
| December | 17.0 °F | 37.9 °F | 0.65 in. |
| Annual | 33.8 °F | 60.8 °F | 14.13 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |