Beulah Valley, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2.5 °C (low) to 18.4 °C (high). Annual precipitation averages 544.1 Millimeters. Beulah Valley is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.7 °C | 8.1 °C | 20.83 mm |
| February | -6.3 °C | 8.8 °C | 25.15 mm |
| March | -2.7 °C | 13.3 °C | 46.48 mm |
| April | 0.8 °C | 16.5 °C | 74.17 mm |
| May | 5.9 °C | 21.6 °C | 64.26 mm |
| June | 11 °C | 27.9 °C | 36.83 mm |
| July | 13.8 °C | 30.3 °C | 87.38 mm |
| August | 12.9 °C | 28.9 °C | 71.88 mm |
| September | 8.7 °C | 25.5 °C | 32.51 mm |
| October | 2.3 °C | 19.1 °C | 34.54 mm |
| November | -2.7 °C | 12.8 °C | 27.69 mm |
| December | -6.8 °C | 7.9 °C | 22.35 mm |
| Annual | 2.5 °C | 18.4 °C | 544.07 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |