Amalga, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 0.7 °C (low) to 15.7 °C (high). Annual precipitation averages 417.1 Millimeters. Amalga is located in USDA Plant Hardiness Zone 5b. 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 | -10 °C | 0.1 °C | 45.21 mm |
| February | -8.2 °C | 2.9 °C | 34.54 mm |
| March | -2.8 °C | 9.7 °C | 41.15 mm |
| April | 0.8 °C | 14.8 °C | 48.01 mm |
| May | 4.8 °C | 20.2 °C | 55.12 mm |
| June | 8.4 °C | 26.3 °C | 28.19 mm |
| July | 11.9 °C | 32 °C | 14.48 mm |
| August | 11 °C | 31.2 °C | 17.78 mm |
| September | 6.1 °C | 25.4 °C | 31.75 mm |
| October | 0.3 °C | 17.1 °C | 37.34 mm |
| November | -4.3 °C | 8.3 °C | 29.21 mm |
| December | -9.2 °C | 0.8 °C | 34.29 mm |
| Annual | 0.7 °C | 15.7 °C | 417.07 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |