| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 55d - Pre-Wisconsinan Drift Plains |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 45168 - Russellville, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 23 | 31 | 41 | 51 | 60 | 63 | 61 | 54 | 42 | 34 | 25 | 42 |
| Avg Max Temp (°F) | 38 | 43 | 53 | 63 | 73 | 81 | 85 | 84 | 78 | 67 | 53 | 43 | 63 |
| Avg Precip (In.) | 3.04 | 2.92 | 4.05 | 3.94 | 4.88 | 4.36 | 4.48 | 4.05 | 3.22 | 2.94 | 3.43 | 3.52 | 44.82 |