Millville, Utah has a Humid Continental Climate - Dry Warm Summer climate (Köppen classification: Dsa). Average annual temperatures range from 34.8 °F (low) to 60 °F (high). Annual precipitation averages 17.7 Inches. Millville is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.6 °F | 32.9 °F | 1.96 in. |
| February | 18.9 °F | 37.5 °F | 1.53 in. |
| March | 27.9 °F | 49.4 °F | 2.06 in. |
| April | 33.9 °F | 57.9 °F | 2.03 in. |
| May | 41.3 °F | 67.5 °F | 2.14 in. |
| June | 48.0 °F | 78.7 °F | 1.2 in. |
| July | 55.7 °F | 88.8 °F | 0.69 in. |
| August | 54.3 °F | 87.5 °F | 0.63 in. |
| September | 45.2 °F | 76.9 °F | 1.22 in. |
| October | 34.3 °F | 62.3 °F | 1.65 in. |
| November | 25.6 °F | 46.6 °F | 1.26 in. |
| December | 16.9 °F | 34.1 °F | 1.33 in. |
| Annual | 34.8 °F | 60 °F | 17.7 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dsa - Humid Continental Climate - Dry Warm Summer |