Hyattville, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -0.1 °C (low) to 15.7 °C (high). Annual precipitation averages 293.1 Millimeters. Hyattville is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.7 °C | 1.4 °C | 12.7 mm |
| February | -10.8 °C | 3.3 °C | 15.24 mm |
| March | -5.1 °C | 9.9 °C | 19.05 mm |
| April | -0.4 °C | 14.6 °C | 32.77 mm |
| May | 4.9 °C | 20.1 °C | 51.82 mm |
| June | 9.7 °C | 26.4 °C | 35.56 mm |
| July | 13.3 °C | 31.9 °C | 22.35 mm |
| August | 11.5 °C | 30.8 °C | 14.99 mm |
| September | 6.3 °C | 24.6 °C | 30.73 mm |
| October | -0.1 °C | 15.8 °C | 29.21 mm |
| November | -6.4 °C | 7.9 °C | 16.76 mm |
| December | -11.7 °C | 2.1 °C | 11.94 mm |
| Annual | -0.1 °C | 15.7 °C | 293.12 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |