Mountain Green, Utah has a Humid Continental Climate - Dry Warm Summer climate (Köppen classification: Dsa). Average annual temperatures range from 36.3 °F (low) to 61 °F (high). Annual precipitation averages 23.6 Inches. Mountain Green 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 | 17.5 °F | 35.4 °F | 2.66 in. |
| February | 21.1 °F | 40.6 °F | 2.21 in. |
| March | 28.9 °F | 50.9 °F | 2.44 in. |
| April | 34.7 °F | 58.3 °F | 2.73 in. |
| May | 42.6 °F | 68.2 °F | 2.63 in. |
| June | 49.5 °F | 79.1 °F | 1.41 in. |
| July | 57.5 °F | 88.7 °F | 0.63 in. |
| August | 56.0 °F | 87.3 °F | 0.88 in. |
| September | 46.8 °F | 77.0 °F | 1.54 in. |
| October | 35.8 °F | 62.7 °F | 2.07 in. |
| November | 26.4 °F | 48.0 °F | 1.96 in. |
| December | 18.3 °F | 36.0 °F | 2.44 in. |
| Annual | 36.3 °F | 61 °F | 23.6 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 |