Fountain Green, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 29.9 °F (low) to 60.7 °F (high). Annual precipitation averages 12.8 Inches. Fountain Green 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 | 11.1 °F | 35.9 °F | 1.29 in. |
| February | 15.8 °F | 40.5 °F | 1.26 in. |
| March | 23.0 °F | 50.5 °F | 1.04 in. |
| April | 28.3 °F | 58.1 °F | 1.31 in. |
| May | 35.5 °F | 67.6 °F | 1.03 in. |
| June | 42.9 °F | 79.3 °F | 0.75 in. |
| July | 50.7 °F | 87.0 °F | 0.72 in. |
| August | 49.4 °F | 85.3 °F | 0.86 in. |
| September | 39.9 °F | 76.5 °F | 1.05 in. |
| October | 29.9 °F | 63.2 °F | 1.22 in. |
| November | 20.0 °F | 48.7 °F | 1.03 in. |
| December | 11.7 °F | 36.2 °F | 1.26 in. |
| Annual | 29.9 °F | 60.7 °F | 12.82 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |