Arvada, Wyoming has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Annual precipitation averages 326.4 Millimeters. Arvada is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.3 °C | 1.6 °C | 10.92 mm |
| February | -10.4 °C | 3.7 °C | 12.7 mm |
| March | -4.9 °C | 10.1 °C | 21.59 mm |
| April | -0.3 °C | 15.1 °C | 33.53 mm |
| May | 4.7 °C | 20.3 °C | 62.74 mm |
| June | 9.9 °C | 26.7 °C | 54.61 mm |
| July | 13.2 °C | 32.4 °C | 32.26 mm |
| August | 12.1 °C | 31.8 °C | 20.57 mm |
| September | 6.7 °C | 25.9 °C | 26.42 mm |
| October | -0.4 °C | 16.9 °C | 28.45 mm |
| November | -6.2 °C | 8.2 °C | 10.92 mm |
| December | -11.5 °C | 2 °C | 11.68 mm |
| Annual | 0 °C | 16.2 °C | 326.39 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |