San Acacio, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 26.5 °F (low) to 59 °F (high). Annual precipitation averages 9.6 Inches. San Acacio 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 | 2.9 °F | 34.8 °F | 0.37 in. |
| February | 10.5 °F | 40.2 °F | 0.33 in. |
| March | 19.5 °F | 50.5 °F | 0.65 in. |
| April | 25.9 °F | 57.8 °F | 0.76 in. |
| May | 34.7 °F | 67.0 °F | 0.92 in. |
| June | 42.6 °F | 77.9 °F | 0.68 in. |
| July | 48.5 °F | 81.1 °F | 1.5 in. |
| August | 46.5 °F | 79.0 °F | 1.4 in. |
| September | 39.1 °F | 73.1 °F | 1.13 in. |
| October | 27.6 °F | 62.0 °F | 0.79 in. |
| November | 15.5 °F | 48.3 °F | 0.54 in. |
| December | 4.9 °F | 35.9 °F | 0.52 in. |
| Annual | 26.5 °F | 59 °F | 9.59 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |