Glendale, Utah has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 2.1 °C (low) to 19.4 °C (high). Annual precipitation averages 418.6 Millimeters. Glendale is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7 °C | 7.5 °C | 49.28 mm |
| February | -5.2 °C | 9.3 °C | 51.56 mm |
| March | -2.5 °C | 13.2 °C | 44.45 mm |
| April | 0.2 °C | 18 °C | 25.65 mm |
| May | 4.4 °C | 23.2 °C | 21.84 mm |
| June | 9 °C | 29.6 °C | 9.4 mm |
| July | 13.1 °C | 32.6 °C | 26.42 mm |
| August | 12.6 °C | 31.3 °C | 37.34 mm |
| September | 8.3 °C | 27.3 °C | 37.34 mm |
| October | 2.4 °C | 20.6 °C | 39.88 mm |
| November | -3 °C | 12.8 °C | 29.97 mm |
| December | -7 °C | 7.2 °C | 45.47 mm |
| Annual | 2.1 °C | 19.4 °C | 418.6 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |