Ten Sleep, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 31.2 °F (low) to 61.3 °F (high). Annual precipitation averages 12.4 Inches. Ten Sleep is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.6 °F | 35.3 °F | 0.64 in. |
| February | 11.7 °F | 39.0 °F | 0.81 in. |
| March | 22.6 °F | 50.9 °F | 0.76 in. |
| April | 31.0 °F | 60.0 °F | 1.49 in. |
| May | 40.8 °F | 69.6 °F | 2.05 in. |
| June | 49.1 °F | 80.6 °F | 1.31 in. |
| July | 55.5 °F | 89.8 °F | 0.93 in. |
| August | 51.9 °F | 87.9 °F | 0.69 in. |
| September | 42.6 °F | 77.7 °F | 1.39 in. |
| October | 31.2 °F | 61.6 °F | 1.31 in. |
| November | 19.7 °F | 47.0 °F | 0.68 in. |
| December | 10.2 °F | 36.4 °F | 0.36 in. |
| Annual | 31.2 °F | 61.3 °F | 12.42 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |