Vail, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -4.9 °C (low) to 12.1 °C (high). Annual precipitation averages 591.3 Millimeters. Vail is located in USDA Plant Hardiness Zone 5a. 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 | -15.4 °C | -0.6 °C | 56.13 mm |
| February | -13.7 °C | 1.7 °C | 50.29 mm |
| March | -9.5 °C | 6.4 °C | 54.1 mm |
| April | -5.1 °C | 10.5 °C | 69.6 mm |
| May | -0.8 °C | 16.1 °C | 43.18 mm |
| June | 2.4 °C | 22.8 °C | 32.51 mm |
| July | 6.1 °C | 25.8 °C | 43.43 mm |
| August | 5.1 °C | 24.5 °C | 45.72 mm |
| September | 1.2 °C | 20.4 °C | 52.32 mm |
| October | -4.3 °C | 13 °C | 47.75 mm |
| November | -9.7 °C | 5.4 °C | 49.02 mm |
| December | -14.7 °C | -0.3 °C | 47.24 mm |
| Annual | -4.9 °C | 12.1 °C | 591.29 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |