Thompson Springs, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 40.6 °F (low) to 66.3 °F (high). Annual precipitation averages 10.5 Inches. Thompson Springs 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 | 17.9 °F | 38.9 °F | 0.88 in. |
| February | 24.8 °F | 46.0 °F | 0.81 in. |
| March | 31.9 °F | 57.6 °F | 0.95 in. |
| April | 37.7 °F | 65.2 °F | 0.7 in. |
| May | 47.4 °F | 75.2 °F | 1.06 in. |
| June | 57.6 °F | 87.8 °F | 0.38 in. |
| July | 64.5 °F | 93.6 °F | 0.68 in. |
| August | 61.9 °F | 90.9 °F | 1.16 in. |
| September | 53.6 °F | 81.4 °F | 1.42 in. |
| October | 40.8 °F | 67.1 °F | 1.15 in. |
| November | 29.1 °F | 52.4 °F | 0.62 in. |
| December | 19.4 °F | 39.5 °F | 0.66 in. |
| Annual | 40.6 °F | 66.3 °F | 10.47 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 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |