| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| 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: | 13f - Moist Wasatch Front Footslopes | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 84003 - American Fork, UT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 22 | 29 | 35 | 43 | 51 | 58 | 57 | 47 | 37 | 28 | 20 | 37 |
| Avg Max Temp (°F) | 37 | 44 | 54 | 62 | 73 | 83 | 91 | 89 | 80 | 66 | 49 | 39 | 64 |
| Avg Precip (In.) | 1.5 | 1.26 | 1.48 | 1.59 | 1.59 | .85 | .74 | .9 | 1.09 | 1.47 | 1.24 | 1.08 | 14.79 |