| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7b: 5°F to 10°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 5a: -20°F to -15°F Zone 7a: 0°F to 5°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Aug. 1 - Aug. 10 |
| Average Last Frost Date: | May 21 - May 31 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 11k - Blue Mountain Basins |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 97828 - Enterprise, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 20 | 23 | 28 | 35 | 40 | 44 | 43 | 36 | 29 | 24 | 17 | 30 |
| Avg Max Temp (°F) | 34 | 41 | 47 | 53 | 63 | 70 | 80 | 81 | 72 | 59 | 44 | 35 | 56 |
| Avg Precip (In.) | .91 | .83 | 1.1 | 1.44 | 1.88 | 1.84 | .85 | .89 | .93 | 1.06 | 1.21 | 1.13 | 14.06 |