Osmond, Wyoming has a Subarctic With Cool Summers And Year Around Rainfall climate (Köppen classification: Dfc). Average annual temperatures range from -4.1 °C (low) to 11.7 °C (high). Annual precipitation averages 498.3 Millimeters. 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 | -14.4 °C | -2.1 °C | 43.69 mm |
| February | -13.3 °C | 0 °C | 38.86 mm |
| March | -8.7 °C | 5.1 °C | 43.69 mm |
| April | -4 °C | 9.8 °C | 49.28 mm |
| May | 0.4 °C | 15.8 °C | 65.53 mm |
| June | 3.3 °C | 21.3 °C | 42.16 mm |
| July | 6.3 °C | 26.9 °C | 25.65 mm |
| August | 5.5 °C | 26.6 °C | 28.19 mm |
| September | 1.4 °C | 21.2 °C | 35.56 mm |
| October | -3.1 °C | 13.1 °C | 42.93 mm |
| November | -8.3 °C | 4.7 °C | 39.62 mm |
| December | -13.7 °C | -1.8 °C | 43.18 mm |
| Annual | -4.1 °C | 11.7 °C | 498.34 mm |
| 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 : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfc - Subarctic With Cool Summers And Year Around Rainfall |