Layton, Utah has a Humid Continental Climate - Dry Warm Summer climate (Köppen classification: Dsa). Average annual temperatures range from 4.9 °C (low) to 17.5 °C (high). Annual precipitation averages 495.3 Millimeters. Layton is located in USDA Plant Hardiness Zone 7a. 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 | -5.6 °C | 3.2 °C | 51.82 mm |
| February | -3.6 °C | 6.2 °C | 43.43 mm |
| March | 0.5 °C | 12 °C | 51.56 mm |
| April | 3.6 °C | 16 °C | 59.69 mm |
| May | 8.1 °C | 21.6 °C | 62.99 mm |
| June | 12.5 °C | 27.8 °C | 29.97 mm |
| July | 17.4 °C | 33.2 °C | 13.97 mm |
| August | 16.6 °C | 32.2 °C | 18.03 mm |
| September | 11.2 °C | 26.4 °C | 33.78 mm |
| October | 4.6 °C | 18.2 °C | 46.48 mm |
| November | -0.9 °C | 9.8 °C | 39.88 mm |
| December | -5.3 °C | 3.3 °C | 43.69 mm |
| Annual | 4.9 °C | 17.5 °C | 495.29 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 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dsa - Humid Continental Climate - Dry Warm Summer |