Fountain Green, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from -1.2 °C (low) to 16 °C (high). Annual precipitation averages 325.6 Millimeters. 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 | -11.6 °C | 2.2 °C | 32.77 mm |
| February | -9 °C | 4.7 °C | 32 mm |
| March | -5 °C | 10.3 °C | 26.42 mm |
| April | -2.1 °C | 14.5 °C | 33.27 mm |
| May | 1.9 °C | 19.8 °C | 26.16 mm |
| June | 6.1 °C | 26.3 °C | 19.05 mm |
| July | 10.4 °C | 30.6 °C | 18.29 mm |
| August | 9.7 °C | 29.6 °C | 21.84 mm |
| September | 4.4 °C | 24.7 °C | 26.67 mm |
| October | -1.2 °C | 17.3 °C | 30.99 mm |
| November | -6.7 °C | 9.3 °C | 26.16 mm |
| December | -11.3 °C | 2.3 °C | 32 mm |
| Annual | -1.2 °C | 16 °C | 325.62 mm |
| 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 : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |