Newton, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.4 °C (low) to 15.6 °C (high). Annual precipitation averages 420.1 Millimeters. Newton 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 | -9.6 °C | 0.2 °C | 45.72 mm |
| February | -7.3 °C | 3 °C | 37.85 mm |
| March | -2.2 °C | 9.7 °C | 39.37 mm |
| April | 1.1 °C | 14.7 °C | 44.96 mm |
| May | 5.1 °C | 19.9 °C | 56.9 mm |
| June | 8.7 °C | 26 °C | 27.43 mm |
| July | 12.7 °C | 31.7 °C | 13.97 mm |
| August | 11.9 °C | 31.1 °C | 17.27 mm |
| September | 7.2 °C | 25.2 °C | 31.5 mm |
| October | 1.3 °C | 16.8 °C | 38.1 mm |
| November | -3.7 °C | 8.2 °C | 29.72 mm |
| December | -8.4 °C | 1.1 °C | 37.34 mm |
| Annual | 1.4 °C | 15.6 °C | 420.13 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 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |