Cannonville, Utah has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.9 °C (low) to 18.8 °C (high). Annual precipitation averages 286.5 Millimeters. Cannonville 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.4 °C | 6.8 °C | 24.38 mm |
| February | -6.2 °C | 8.8 °C | 26.42 mm |
| March | -3.1 °C | 12.9 °C | 24.13 mm |
| April | -0.6 °C | 17.6 °C | 14.22 mm |
| May | 3.6 °C | 22.7 °C | 14.99 mm |
| June | 7.5 °C | 28.9 °C | 7.87 mm |
| July | 12.1 °C | 32 °C | 22.86 mm |
| August | 11.3 °C | 30.6 °C | 39.12 mm |
| September | 6.9 °C | 26.6 °C | 39.12 mm |
| October | 1.2 °C | 19.9 °C | 34.8 mm |
| November | -4.7 °C | 12.6 °C | 18.03 mm |
| December | -8.3 °C | 6.6 °C | 20.57 mm |
| Annual | 0.9 °C | 18.8 °C | 286.51 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 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 | Dfb - Humid Continental Mild Summer, Wet All Year |