Coalville, Utah has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from -0.5 °C (low) to 16.2 °C (high). Annual precipitation averages 393.7 Millimeters. Coalville is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.6 °C | 2.2 °C | 33.27 mm |
| February | -8.4 °C | 4.8 °C | 25.91 mm |
| March | -3.9 °C | 10.4 °C | 32 mm |
| April | -0.9 °C | 14.8 °C | 39.88 mm |
| May | 2.9 °C | 20.1 °C | 46.99 mm |
| June | 6.2 °C | 26.3 °C | 31.24 mm |
| July | 10.2 °C | 31.3 °C | 23.88 mm |
| August | 9.4 °C | 30.3 °C | 21.59 mm |
| September | 4.7 °C | 25.3 °C | 32.26 mm |
| October | -0.7 °C | 17.9 °C | 36.58 mm |
| November | -5.4 °C | 9 °C | 35.05 mm |
| December | -9.7 °C | 2.3 °C | 35.05 mm |
| Annual | -0.5 °C | 16.2 °C | 393.7 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |