Ranchettes, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 33 °F (low) to 58.7 °F (high). Annual precipitation averages 15.8 Inches. Ranchettes 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.1 °F | 39.8 °F | 0.32 in. |
| February | 16.6 °F | 40.2 °F | 0.44 in. |
| March | 23.4 °F | 48.4 °F | 0.84 in. |
| April | 29.1 °F | 54.1 °F | 1.68 in. |
| May | 38.6 °F | 63.3 °F | 2.57 in. |
| June | 47.8 °F | 75.7 °F | 2.46 in. |
| July | 54.3 °F | 83.0 °F | 2.0 in. |
| August | 52.6 °F | 81.3 °F | 1.84 in. |
| September | 44.0 °F | 73.0 °F | 1.64 in. |
| October | 32.6 °F | 59.5 °F | 1.07 in. |
| November | 23.3 °F | 47.3 °F | 0.55 in. |
| December | 17.0 °F | 39.0 °F | 0.43 in. |
| Annual | 33 °F | 58.7 °F | 15.84 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |