Arriba, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1.1 °C (low) to 17.6 °C (high). Annual precipitation averages 408.7 Millimeters. Arriba is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.7 °C | 6.1 °C | 7.87 mm |
| February | -8.6 °C | 6.8 °C | 9.4 mm |
| March | -4.4 °C | 12.3 °C | 19.81 mm |
| April | -0.6 °C | 16.1 °C | 38.35 mm |
| May | 5.1 °C | 21.2 °C | 59.18 mm |
| June | 10.7 °C | 27.8 °C | 60.71 mm |
| July | 13.9 °C | 31 °C | 75.95 mm |
| August | 12.9 °C | 29.6 °C | 66.04 mm |
| September | 8.1 °C | 25.6 °C | 26.92 mm |
| October | 0.8 °C | 18.1 °C | 25.65 mm |
| November | -5.3 °C | 11 °C | 10.41 mm |
| December | -9.6 °C | 5.8 °C | 8.38 mm |
| Annual | 1.1 °C | 17.6 °C | 408.67 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°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 |