Rawlins, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -0.5 °C (low) to 13 °C (high). Annual precipitation averages 337.8 Millimeters. Rawlins is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.2 °C | -0.2 °C | 25.4 mm |
| February | -9.4 °C | 1 °C | 18.03 mm |
| March | -5.3 °C | 6.5 °C | 25.65 mm |
| April | -2.2 °C | 11.2 °C | 37.59 mm |
| May | 2.7 °C | 17.1 °C | 54.61 mm |
| June | 7.4 °C | 23.9 °C | 23.62 mm |
| July | 11.3 °C | 28.5 °C | 24.38 mm |
| August | 10.2 °C | 27.2 °C | 19.3 mm |
| September | 5.4 °C | 21.9 °C | 26.67 mm |
| October | -0.3 °C | 13.6 °C | 34.54 mm |
| November | -5.6 °C | 5.6 °C | 27.43 mm |
| December | -10.1 °C | -0.2 °C | 20.57 mm |
| Annual | -0.5 °C | 13 °C | 337.79 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |