Mantua, Utah has a Humid Continental Climate - Dry Warm Summer climate (Köppen classification: Dsa). Average annual temperatures range from 33.9 °F (low) to 58.8 °F (high). Annual precipitation averages 26.5 Inches. Mantua is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.7 °F | 33.7 °F | 3.38 in. |
| February | 19.0 °F | 37.4 °F | 2.33 in. |
| March | 26.5 °F | 47.8 °F | 3.09 in. |
| April | 32.4 °F | 56.0 °F | 3.17 in. |
| May | 39.3 °F | 65.5 °F | 3.65 in. |
| June | 45.8 °F | 76.5 °F | 1.52 in. |
| July | 53.9 °F | 86.8 °F | 0.48 in. |
| August | 53.0 °F | 85.6 °F | 0.73 in. |
| September | 44.5 °F | 75.0 °F | 1.75 in. |
| October | 34.4 °F | 60.7 °F | 1.9 in. |
| November | 25.3 °F | 45.6 °F | 1.76 in. |
| December | 16.8 °F | 34.4 °F | 2.78 in. |
| Annual | 33.9 °F | 58.8 °F | 26.54 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dsa - Humid Continental Climate - Dry Warm Summer |