| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 6b: -5°F to 0°F Zone 4b: -25°F to -20°F Zone 6a: -10°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 4b: -25°F to -20°F Zone 4a: -30°F to -25°F Zone 5a: -20°F to -15°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: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 20c - Semiarid Benchlands and Canyonlands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 84526 - Helper, UT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 19 | 26 | 33 | 40 | 49 | 56 | 54 | 47 | 36 | 26 | 16 | 35 |
| Avg Max Temp (°F) | 36 | 41 | 51 | 60 | 69 | 80 | 87 | 85 | 77 | 62 | 46 | 38 | 61 |
| Avg Precip (In.) | .85 | .83 | 1.02 | .77 | .87 | .6 | .95 | 1.22 | 1.42 | 1.26 | .64 | .72 | 11.14 |