Purple Sage, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 30.1 °F (low) to 58.4 °F (high). Annual precipitation averages 9.7 Inches. Purple Sage is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 10.7 °F | 33.4 °F | 0.53 in. |
| February | 12.9 °F | 36.8 °F | 0.49 in. |
| March | 22.3 °F | 47.0 °F | 0.71 in. |
| April | 29.0 °F | 56.3 °F | 1.15 in. |
| May | 37.0 °F | 66.0 °F | 1.71 in. |
| June | 44.8 °F | 77.6 °F | 0.92 in. |
| July | 51.5 °F | 86.3 °F | 0.57 in. |
| August | 49.9 °F | 84.3 °F | 0.6 in. |
| September | 40.9 °F | 74.8 °F | 1.0 in. |
| October | 30.7 °F | 60.3 °F | 0.95 in. |
| November | 20.4 °F | 44.8 °F | 0.62 in. |
| December | 11.4 °F | 33.6 °F | 0.48 in. |
| Annual | 30.1 °F | 58.4 °F | 9.73 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |