Midwest, Wyoming has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Annual precipitation averages 330 Millimeters. Midwest 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 | -10.5 °C | 2.5 °C | 8.38 mm |
| February | -9.6 °C | 3.7 °C | 12.95 mm |
| March | -5.1 °C | 9.7 °C | 29.21 mm |
| April | -1.2 °C | 13.9 °C | 37.34 mm |
| May | 3.8 °C | 19.3 °C | 66.55 mm |
| June | 8.8 °C | 26.2 °C | 46.74 mm |
| July | 12.4 °C | 31.6 °C | 35.56 mm |
| August | 11.3 °C | 30.9 °C | 16 mm |
| September | 6.1 °C | 25.1 °C | 22.61 mm |
| October | -0.1 °C | 16.6 °C | 31.75 mm |
| November | -5.6 °C | 7.9 °C | 11.18 mm |
| December | -10.1 °C | 2.4 °C | 11.68 mm |
| Annual | 0 °C | 15.8 °C | 329.95 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 |