Naples, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.8 °C (low) to 16.1 °C (high). Annual precipitation averages 194.3 Millimeters. Naples is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.9 °C | -1.4 °C | 17.27 mm |
| February | -9.3 °C | 3.3 °C | 12.45 mm |
| March | -3.3 °C | 11.4 °C | 14.48 mm |
| April | 0.6 °C | 16.2 °C | 14.22 mm |
| May | 5.3 °C | 21.6 °C | 25.15 mm |
| June | 9.9 °C | 28.2 °C | 8.89 mm |
| July | 13.8 °C | 32.1 °C | 7.11 mm |
| August | 12.7 °C | 30.5 °C | 18.03 mm |
| September | 7.8 °C | 25.7 °C | 25.65 mm |
| October | 1.2 °C | 17.2 °C | 23.11 mm |
| November | -4.8 °C | 8.4 °C | 11.43 mm |
| December | -11.2 °C | -0.1 °C | 16.51 mm |
| Annual | 0.8 °C | 16.1 °C | 194.3 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |