| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 70f - Ohio/Kentucky Carboniferous Plateau |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 43777 - Roseville, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 20 | 29 | 37 | 48 | 57 | 61 | 59 | 52 | 40 | 32 | 23 | 40 |
| Avg Max Temp (°F) | 36 | 41 | 52 | 63 | 73 | 80 | 84 | 82 | 76 | 65 | 52 | 41 | 62 |
| Avg Precip (In.) | 2.68 | 2.21 | 2.93 | 3.47 | 4.14 | 4.22 | 4.35 | 3.95 | 2.91 | 2.49 | 3.15 | 2.76 | 39.25 |