| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F | |
| 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: | 13i - Malad and Cache Valleys | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 84325 - Mendon, UT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 17 | 26 | 33 | 40 | 48 | 54 | 52 | 43 | 33 | 24 | 15 | 33 |
| Avg Max Temp (°F) | 32 | 38 | 48 | 58 | 68 | 79 | 88 | 86 | 75 | 63 | 45 | 34 | 59 |
| Avg Precip (In.) | 1.82 | 1.63 | 1.88 | 2.05 | 2.24 | 1.18 | .86 | .93 | 1.35 | 1.83 | 1.53 | 1.56 | 18.86 |