| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 37d - Arkansas Valley Plains |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 72801 - Russellville, AR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 30 | 39 | 46 | 56 | 64 | 69 | 67 | 60 | 48 | 38 | 30 | 48 |
| Avg Max Temp (°F) | 49 | 56 | 64 | 73 | 80 | 88 | 93 | 92 | 85 | 75 | 61 | 51 | 72 |
| Avg Precip (In.) | 3.04 | 3.27 | 4.51 | 4.32 | 5.52 | 4.26 | 2.95 | 2.8 | 3.59 | 4.17 | 5.17 | 4.35 | 47.93 |