Spanish Valley, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 39.8 °F (low) to 68.7 °F (high). Annual precipitation averages 11.1 Inches. Spanish Valley is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.6 °F | 41.3 °F | 0.65 in. |
| February | 24.5 °F | 48.6 °F | 0.77 in. |
| March | 31.8 °F | 59.5 °F | 0.88 in. |
| April | 37.8 °F | 67.5 °F | 1.12 in. |
| May | 46.5 °F | 77.9 °F | 0.9 in. |
| June | 56.0 °F | 90.0 °F | 0.46 in. |
| July | 62.9 °F | 95.8 °F | 0.87 in. |
| August | 60.9 °F | 93.1 °F | 1.1 in. |
| September | 52.2 °F | 84.2 °F | 1.15 in. |
| October | 38.9 °F | 70.1 °F | 1.36 in. |
| November | 28.0 °F | 54.6 °F | 0.97 in. |
| December | 19.0 °F | 41.9 °F | 0.91 in. |
| Annual | 39.8 °F | 68.7 °F | 11.14 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |