Wellsville, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 35.4 °F (low) to 60.4 °F (high). Annual precipitation averages 18.1 Inches. Wellsville 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.1 °F | 33.5 °F | 1.97 in. |
| February | 19.5 °F | 38.2 °F | 1.55 in. |
| March | 28.4 °F | 49.8 °F | 1.97 in. |
| April | 34.3 °F | 58.2 °F | 2.0 in. |
| May | 41.9 °F | 67.8 °F | 2.32 in. |
| June | 48.7 °F | 79.0 °F | 1.15 in. |
| July | 56.9 °F | 89.2 °F | 0.6 in. |
| August | 55.2 °F | 87.8 °F | 0.68 in. |
| September | 46.1 °F | 77.0 °F | 1.3 in. |
| October | 34.9 °F | 62.5 °F | 1.7 in. |
| November | 25.9 °F | 47.0 °F | 1.3 in. |
| December | 17.4 °F | 34.6 °F | 1.58 in. |
| Annual | 35.4 °F | 60.4 °F | 18.12 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |