Wamsutter, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -1.5 °C (low) to 13.3 °C (high). Annual precipitation averages 211.3 Millimeters. Wamsutter is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.9 °C | -0.8 °C | 10.16 mm |
| February | -10.9 °C | 0.8 °C | 10.41 mm |
| March | -6.1 °C | 6.9 °C | 13.72 mm |
| April | -2.6 °C | 11.9 °C | 20.32 mm |
| May | 1.8 °C | 17.8 °C | 34.54 mm |
| June | 6.6 °C | 24.4 °C | 20.07 mm |
| July | 10.3 °C | 29.1 °C | 18.03 mm |
| August | 9.4 °C | 27.9 °C | 18.03 mm |
| September | 4.7 °C | 22.8 °C | 22.61 mm |
| October | -1.2 °C | 14.2 °C | 17.53 mm |
| November | -6.8 °C | 5.7 °C | 14.22 mm |
| December | -11.8 °C | -0.8 °C | 11.68 mm |
| Annual | -1.5 °C | 13.3 °C | 211.32 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |