| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 13c - Sagebrush Basins and Slopes | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 84029 - Grantsville, UT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 23 | 29 | 34 | 43 | 52 | 59 | 58 | 48 | 36 | 27 | 19 | 37 |
| Avg Max Temp (°F) | 38 | 45 | 53 | 61 | 72 | 84 | 92 | 91 | 80 | 65 | 50 | 40 | 64 |
| Avg Precip (In.) | .49 | .96 | 1.32 | 1.44 | 1.61 | .78 | .78 | .89 | 1.07 | 1.29 | 1.06 | .74 | 12.42 |