| 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 Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 83a - Erie Lake Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 44041 - Geneva, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 18 | 27 | 35 | 46 | 55 | 60 | 59 | 53 | 42 | 33 | 25 | 39 |
| Avg Max Temp (°F) | 34 | 36 | 47 | 57 | 69 | 77 | 81 | 80 | 73 | 62 | 50 | 40 | 59 |
| Avg Precip (In.) | 2.3 | 1.92 | 2.57 | 3.38 | 3.08 | 4.22 | 3.79 | 4.04 | 4.13 | 3.63 | 3.69 | 3.14 | 39.89 |