Rangely, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.2 °C (low) to 16.9 °C (high). Annual precipitation averages 264.2 Millimeters. Rangely is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14 °C | -0.7 °C | 15.49 mm |
| February | -10.8 °C | 3.6 °C | 15.75 mm |
| March | -3.9 °C | 11.4 °C | 20.32 mm |
| April | 0 °C | 16.6 °C | 27.18 mm |
| May | 5 °C | 22.4 °C | 28.96 mm |
| June | 9.7 °C | 29.4 °C | 17.53 mm |
| July | 13.6 °C | 33.4 °C | 18.03 mm |
| August | 12.1 °C | 31.9 °C | 23.37 mm |
| September | 7.8 °C | 26.8 °C | 32.51 mm |
| October | 0.9 °C | 18.4 °C | 29.97 mm |
| November | -5.9 °C | 8.7 °C | 20.07 mm |
| December | -12.4 °C | 0.6 °C | 14.99 mm |
| Annual | 0.2 °C | 16.9 °C | 264.17 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 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 | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |