| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F 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 6a: -10F to -5F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | 13f - Moist Wasatch Front Footslopes | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 84065 - Riverton, UT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 23 | 31 | 36 | 44 | 52 | 59 | 58 | 49 | 38 | 28 | 21 | 38 |
| Avg Max Temp (°F) | 37 | 43 | 52 | 61 | 71 | 82 | 90 | 88 | 78 | 64 | 48 | 38 | 63 |
| Avg Precip (In.) | 1.1 | 1.07 | 1.52 | 1.51 | 1.74 | 1.13 | .61 | 1.24 | 1.09 | 1.11 | .9 | 1.45 | 14.47 |