Black Forest, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -0.2 °C (low) to 15.2 °C (high). Annual precipitation averages 551.7 Millimeters. Black Forest is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.9 °C | 5.6 °C | 15.75 mm |
| February | -8.6 °C | 5.8 °C | 21.34 mm |
| March | -5.3 °C | 9.8 °C | 38.1 mm |
| April | -2.3 °C | 12.9 °C | 68.33 mm |
| May | 2.7 °C | 17.8 °C | 63.5 mm |
| June | 7.8 °C | 24.3 °C | 57.4 mm |
| July | 11.4 °C | 27.1 °C | 83.82 mm |
| August | 10.6 °C | 25.8 °C | 90.17 mm |
| September | 5.8 °C | 22.3 °C | 42.67 mm |
| October | -0.2 °C | 15.8 °C | 28.96 mm |
| November | -5.6 °C | 9.7 °C | 23.88 mm |
| December | -9.2 °C | 5.3 °C | 17.78 mm |
| Annual | -0.2 °C | 15.2 °C | 551.7 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |