Carpenter, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.4 °C (low) to 16.5 °C (high). Annual precipitation averages 382.5 Millimeters. Carpenter is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.3 °C | 4.8 °C | 6.86 mm |
| February | -8.9 °C | 5.6 °C | 8.13 mm |
| March | -5.1 °C | 10.6 °C | 19.56 mm |
| April | -1.4 °C | 14.6 °C | 40.89 mm |
| May | 3.9 °C | 19.6 °C | 67.56 mm |
| June | 9.1 °C | 26.4 °C | 59.94 mm |
| July | 12.6 °C | 30.4 °C | 56.9 mm |
| August | 11.4 °C | 29.4 °C | 42.67 mm |
| September | 6.7 °C | 24.7 °C | 35.81 mm |
| October | 0.2 °C | 17.1 °C | 25.4 mm |
| November | -5.4 °C | 9.6 °C | 11.43 mm |
| December | -9.6 °C | 4.8 °C | 7.37 mm |
| Annual | 0.4 °C | 16.5 °C | 382.52 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |