Osmond, Wyoming has a Subarctic With Cool Summers And Year Around Rainfall climate (Köppen classification: Dfc). Average annual temperatures range from 24.7 °F (low) to 53.1 °F (high). Annual precipitation averages 19.6 Inches. Osmond is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Jun. 11 - Jun. 20 through the first frost around Aug. 11 - Aug. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.1 °F | 28.3 °F | 1.72 in. |
| February | 8.1 °F | 32.0 °F | 1.53 in. |
| March | 16.4 °F | 41.1 °F | 1.72 in. |
| April | 24.8 °F | 49.7 °F | 1.94 in. |
| May | 32.8 °F | 60.5 °F | 2.58 in. |
| June | 37.9 °F | 70.3 °F | 1.66 in. |
| July | 43.3 °F | 80.4 °F | 1.01 in. |
| August | 41.9 °F | 79.8 °F | 1.11 in. |
| September | 34.5 °F | 70.2 °F | 1.4 in. |
| October | 26.5 °F | 55.6 °F | 1.69 in. |
| November | 17.1 °F | 40.5 °F | 1.56 in. |
| December | 7.3 °F | 28.7 °F | 1.7 in. |
| Annual | 24.7 °F | 53.1 °F | 19.62 in. |
| Average First Frost Date | Aug. 11 - Aug. 20 |
| Average Last Frost Date | Jun. 11 - Jun. 20 |
| Average Days With Frost | Over 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 | Dfc - Subarctic With Cool Summers And Year Around Rainfall |