| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 39c - White River Hills |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 72658 - Norfork, AR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 27 | 35 | 43 | 53 | 61 | 65 | 64 | 56 | 44 | 35 | 26 | 44 |
| Avg Max Temp (°F) | 46 | 52 | 61 | 71 | 78 | 86 | 92 | 91 | 83 | 73 | 59 | 49 | 70 |
| Avg Precip (In.) | 2.75 | 3.02 | 4.48 | 4.22 | 4.78 | 3.86 | 2.94 | 2.81 | 4.03 | 3.46 | 5.03 | 3.92 | 45.3 |