Holladay, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.1 °C (low) to 18.1 °C (high). Annual precipitation averages 520.2 Millimeters. Holladay is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.4 °C | 4.2 °C | 46.99 mm |
| February | -3.3 °C | 6.9 °C | 45.72 mm |
| March | 0.8 °C | 12.7 °C | 63.5 mm |
| April | 3.4 °C | 16.4 °C | 71.88 mm |
| May | 8.3 °C | 22.1 °C | 59.69 mm |
| June | 12.7 °C | 28.2 °C | 34.8 mm |
| July | 17.7 °C | 33.6 °C | 17.53 mm |
| August | 16.7 °C | 32.6 °C | 17.27 mm |
| September | 11.4 °C | 26.8 °C | 27.94 mm |
| October | 4.9 °C | 18.7 °C | 48.26 mm |
| November | -0.8 °C | 10.6 °C | 38.35 mm |
| December | -5.1 °C | 4.4 °C | 48.26 mm |
| Annual | 5.1 °C | 18.1 °C | 520.19 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |