| 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 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| 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: | 61c - Low Lime Drift Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 44139 - Solon, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 18 | 27 | 36 | 47 | 56 | 60 | 59 | 52 | 41 | 33 | 23 | 39 |
| Avg Max Temp (°F) | 33 | 36 | 46 | 58 | 69 | 77 | 82 | 80 | 73 | 61 | 49 | 38 | 58 |
| Avg Precip (In.) | 2.56 | 2.26 | 3.05 | 3.44 | 3.79 | 4.14 | 3.83 | 3.8 | 3.94 | 2.95 | 3.45 | 3.28 | 40.5 |