| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°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 7a: 0°F to 5°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 13c - Sagebrush Basins and Slopes | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 84631 - Fillmore, UT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 22 | 29 | 35 | 43 | 51 | 58 | 57 | 48 | 37 | 26 | 18 | 37 |
| Avg Max Temp (°F) | 38 | 45 | 53 | 61 | 71 | 82 | 89 | 87 | 78 | 65 | 49 | 39 | 63 |
| Avg Precip (In.) | 1.27 | 1.19 | 1.84 | 1.63 | 1.58 | .64 | .79 | .84 | 1.05 | 1.6 | 1.34 | 1.07 | 14.84 |